CA2162578A1 - Bar code scanner with field replaceable window - Google Patents
Bar code scanner with field replaceable windowInfo
- Publication number
- CA2162578A1 CA2162578A1 CA002162578A CA2162578A CA2162578A1 CA 2162578 A1 CA2162578 A1 CA 2162578A1 CA 002162578 A CA002162578 A CA 002162578A CA 2162578 A CA2162578 A CA 2162578A CA 2162578 A1 CA2162578 A1 CA 2162578A1
- Authority
- CA
- Canada
- Prior art keywords
- window
- scanner
- assembly
- bar code
- boot
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
- 230000003287 optical effect Effects 0.000 claims abstract description 15
- 239000013536 elastomeric material Substances 0.000 claims description 2
- 238000007373 indentation Methods 0.000 description 3
- 230000035939 shock Effects 0.000 description 2
- 206010002660 Anoxia Diseases 0.000 description 1
- 241000976983 Anoxia Species 0.000 description 1
- 206010021143 Hypoxia Diseases 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 230000007953 anoxia Effects 0.000 description 1
- 229940076664 close up Drugs 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011359 shock absorbing material Substances 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
- G06K7/10544—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum
- G06K7/10821—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum further details of bar or optical code scanning devices
- G06K7/10881—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum further details of bar or optical code scanning devices constructional details of hand-held scanners
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
- G06K7/10544—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum
- G06K7/10821—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum further details of bar or optical code scanning devices
- G06K7/1098—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum further details of bar or optical code scanning devices the scanning arrangement having a modular construction
Abstract
A hand-held bar code scanner has a field-replaceable optical element (250) such as a window using a rubber boot (110) to hold the window (250) proximate to the scanner housing (101) in front of the housing. The optical element is most typically a window but may also be a filter or lens.
Description
W094/27~9 21 6 ~ ~ 7 8 PCT~S94/OS176 BAR CODE SCANNER WITH FIELD REPLACEABLE WINDOW
DESCRIPTION
FIELD OF THE INVENTION
The present invention relates to systems for scanning and reading bar codes and other optically discernible symbols and, particularly, to a bar code scanner and reader system which is hand-held and has a housing with a window from which the scan beam exits. The present invention relates more particularly to a field-replaceable window and/or optics assembly for a hand-held bar code scanner. Still more particularly an assembly according to the present invention comprises a rubber boot to hold a window and/or optics proximate to the scanner housing in front of the housing. The optical element may be held over the optical window opening by means of a end cap called a "boot". The optical element is most typically a window but may also be a filter or lens.
RELATED APPLICATIONS
This application is related to a design application entitled "Hand-held Optical Scanner or Similar Article" filed on 8 May 1993; It is also related to a design application entitled "Hand-Held Optical Scanner or Similar Article"
WOg4/27~9 ~ PCT~S94/05176 ~ ~25 (8 filed on 4 May 1993; Both of these design applications are assigned to PSC, Inc., to which the present application is commonly assigned.
BACKGROUND AND SUMMARY OF THE FEATURES OF THE INVENTION
Laser-scanner based bar code reader systems have been in use for some time. These scanners typically comprise a housing having a laser and associated optics therein. Such a laser and associated optics are, in US Patent number 5,200,597, issued to Jay Eastman, et al., on April 6, 1993 and hereby incorporated by reference, integrated together with electronics on a "scan engine" comprising a printed circuit board. The housing is typically a closed structure which supports, among other components, the laser which produces light to scan the target, and the photodetector which receives light returned from the scanned target. Again typically, the housing has at least one optical window.
Light from the laser is optically directed to exit this window, and light returned from the scanned bar code enters this window and is directed toward the photodetector. Thus, the performance of the scanner is in many respects dependent on this window. The window must be quite light transmissive, and hard enough to resist damage.
Unfortunately, during ordinary scanner operation, the window may become damaged and require replacement. In known wo94n7~9 2 ~ ~ 2 5 7 8 PCT~S94/05176 scanner systems of the prior art, the window could only be replaced by disassembling the unit, and reconstructing the housing, and reassembling the scanner.
No presently know bar code scanner features a field replaceable window. Yet other devices have field replaceable windows. None of the existing designs of the prior art suggest even the possibility, let alone how, a field replaceable window could be incorporated in a bar code scanner.
Upgrading a window, too, would be desirable. It may, for example, be desirable to upgrade a bar code window to a "Brewster Scanner Window" of the type disclosed in a patent application filed on May 7, 1993 entitled "Hand-Mounted Optical Scanner System" in the name of Edward Coleman, et al and assigned to the present assignee.
It may also be desirable to add other optical elements or functions to the scanner. For example, a filter, or special anti-scratch coating might be desirable in one environment, and coated optics in another environment.
A lens cap having a window therein is shown in U.S. Patent 5,162,942, issued to Anoxia. The lens cap window features an interior transparent pane, and an exterior semi-transparent (e.g. merely translucent) pane, with a gap known W094~7~9 PCT~S94/05176 2~2~78 as a title inserting portion between the two panes. (Col.
5, lines 50-65) Into this title insertion portion is placed a "title recording paper" upon which desired screen titles are written for easy photographing in macro or close--up fashion.
A seal assembly for covering an indicator light opening in a control panel is shown in U.S. Patent 3,587,184, issued to Walker. In Walker, an elastomeric seal covers the entirety of the opening, and a window is inserted into an integral lip on the outside of that window. The elastomeric seal, unlike that of the present invention, covers the entire opening.
Bengtsson, in US Patent 5,187,354, discloses an hand scanner for reading bar codes and deactivating surveillance tags, which uses a "rubber cuff or sleeve" to hold permanent magnets about the periphery of an opening in the housing.
(Col. 2, lines 29-35). Bengtsson does not teach anything about securing a window about the opening of a scanner.
US Patent 5,177,347, issued to Wike, shows "a scanning unit 26 is mounted within the main body portion 24 by means of a support ring 28 which, in addition to supporting the scanning unit 26, also supports a cover member 30 having an opening 32 in which is positioned the face portion 34 of the scanning unit 26. The cover member 30 may be constructed W094/27~9 21 6 2 ~ ~ 8 PCT~S94/05176 of a transparent material such as acrylic and is shock mounted with respect to the face portion 34 by means of a ring of elastic ~oam material 36." (Col. 2, line 65 to Col.
DESCRIPTION
FIELD OF THE INVENTION
The present invention relates to systems for scanning and reading bar codes and other optically discernible symbols and, particularly, to a bar code scanner and reader system which is hand-held and has a housing with a window from which the scan beam exits. The present invention relates more particularly to a field-replaceable window and/or optics assembly for a hand-held bar code scanner. Still more particularly an assembly according to the present invention comprises a rubber boot to hold a window and/or optics proximate to the scanner housing in front of the housing. The optical element may be held over the optical window opening by means of a end cap called a "boot". The optical element is most typically a window but may also be a filter or lens.
RELATED APPLICATIONS
This application is related to a design application entitled "Hand-held Optical Scanner or Similar Article" filed on 8 May 1993; It is also related to a design application entitled "Hand-Held Optical Scanner or Similar Article"
WOg4/27~9 ~ PCT~S94/05176 ~ ~25 (8 filed on 4 May 1993; Both of these design applications are assigned to PSC, Inc., to which the present application is commonly assigned.
BACKGROUND AND SUMMARY OF THE FEATURES OF THE INVENTION
Laser-scanner based bar code reader systems have been in use for some time. These scanners typically comprise a housing having a laser and associated optics therein. Such a laser and associated optics are, in US Patent number 5,200,597, issued to Jay Eastman, et al., on April 6, 1993 and hereby incorporated by reference, integrated together with electronics on a "scan engine" comprising a printed circuit board. The housing is typically a closed structure which supports, among other components, the laser which produces light to scan the target, and the photodetector which receives light returned from the scanned target. Again typically, the housing has at least one optical window.
Light from the laser is optically directed to exit this window, and light returned from the scanned bar code enters this window and is directed toward the photodetector. Thus, the performance of the scanner is in many respects dependent on this window. The window must be quite light transmissive, and hard enough to resist damage.
Unfortunately, during ordinary scanner operation, the window may become damaged and require replacement. In known wo94n7~9 2 ~ ~ 2 5 7 8 PCT~S94/05176 scanner systems of the prior art, the window could only be replaced by disassembling the unit, and reconstructing the housing, and reassembling the scanner.
No presently know bar code scanner features a field replaceable window. Yet other devices have field replaceable windows. None of the existing designs of the prior art suggest even the possibility, let alone how, a field replaceable window could be incorporated in a bar code scanner.
Upgrading a window, too, would be desirable. It may, for example, be desirable to upgrade a bar code window to a "Brewster Scanner Window" of the type disclosed in a patent application filed on May 7, 1993 entitled "Hand-Mounted Optical Scanner System" in the name of Edward Coleman, et al and assigned to the present assignee.
It may also be desirable to add other optical elements or functions to the scanner. For example, a filter, or special anti-scratch coating might be desirable in one environment, and coated optics in another environment.
A lens cap having a window therein is shown in U.S. Patent 5,162,942, issued to Anoxia. The lens cap window features an interior transparent pane, and an exterior semi-transparent (e.g. merely translucent) pane, with a gap known W094~7~9 PCT~S94/05176 2~2~78 as a title inserting portion between the two panes. (Col.
5, lines 50-65) Into this title insertion portion is placed a "title recording paper" upon which desired screen titles are written for easy photographing in macro or close--up fashion.
A seal assembly for covering an indicator light opening in a control panel is shown in U.S. Patent 3,587,184, issued to Walker. In Walker, an elastomeric seal covers the entirety of the opening, and a window is inserted into an integral lip on the outside of that window. The elastomeric seal, unlike that of the present invention, covers the entire opening.
Bengtsson, in US Patent 5,187,354, discloses an hand scanner for reading bar codes and deactivating surveillance tags, which uses a "rubber cuff or sleeve" to hold permanent magnets about the periphery of an opening in the housing.
(Col. 2, lines 29-35). Bengtsson does not teach anything about securing a window about the opening of a scanner.
US Patent 5,177,347, issued to Wike, shows "a scanning unit 26 is mounted within the main body portion 24 by means of a support ring 28 which, in addition to supporting the scanning unit 26, also supports a cover member 30 having an opening 32 in which is positioned the face portion 34 of the scanning unit 26. The cover member 30 may be constructed W094/27~9 21 6 2 ~ ~ 8 PCT~S94/05176 of a transparent material such as acrylic and is shock mounted with respect to the face portion 34 by means of a ring of elastic ~oam material 36." (Col. 2, line 65 to Col.
3, line 6) Unlike the present invention the cover in Wike does not support a window. Instead that the cover is supported by a ring. This ring "on the main body supports, on one side, the cover with an opening therein, and the same ring supports, on the other side, the scan unit having a [window-like] face 34 thereon" Thus, the cover is supported by the same structure as the face; unlike in the present invention, the cover itself does not support the face. Thus, changing the cover of Wike does not afford any easy way of changing any optical element of Wike. Thus, Wike does not teach the present invention.
US Patent 5,165,782, to Maglica et al. discloses a "Shock absorbing lens holder and anti-roll device" for a flashlight; it teaches a way of holding a filter in front of the flashlight lens. This patent does not teach the apparatus of the present invention, which is composed entirely of shock absorbing material, and which requires no further frame, anti-roll or otherwise, to hold it in place.
Furthermore, Maglica's apparatus requires that it be mounted on a flashlight already having a sealed lens; the present wog4n7249 PCT~S94/05176 21~2578 invention provides what may be a lens, or window, and mounts directly on the scanner BRIEF DESCRIPTION OF THE DRAWINGS
FIG.l is a front perspective elevational view of a bar code scanner and reader system in accordance with a presently preferred embodiment of the invention.
FIG. 2 i~ a right side perspective view of the bar code scanner of Fig. 1 FIG. 3 is a sectional view taken along line 3-3 in Fig. 1.
FIG 4. is a sectional view taken along line 4-4 in FIG. 3.
wo94n7~9 2 ~ 6 2 5 7 8 PCT~S94/05176 DETAILED DESCRIPTION
Referring first to FIGS. 1-4, there is shown a portable bar code laser scanner 100 and a reader. A housing 101 contains the electronics and optics of the unit. It is a bi-part shell having left 12 and Right 14 portions which are assembled together along a parting plane 16 where the portions interconnect. The housing is similar to that disclosed in U.S. Patent 5,200,597, referenced above, but has in addition on its head a scanner window frame, called a boot 110, of elastomeric material (rubber like) which is adapted to receive the head 100 of bar code laser scanner.
The Boot 110 captures a window 250 or other optical element, against the face of the forward end of the housing 210.
FIG. 1, Shows the housing as a bi-part case having two halves 12 and 14 assembled to define a parting line 16.
FIG. 2 shows the scanner with the boot 110 removed.
Indentations provided along ribs at indentations 230 (FIG.3) 202 secure the boot. The exterior dimensions of the head of the scanner which receives the boot (in the nose part 24(7) of the head) are slightly less than those of the rest of the head, which do not receive the boot; The boot can then be essentially flush with the exterior of the housing in the back of the nose 243. In fact, the dimensions at the face 240 on the front end 24 of the nose 243 of the head are merely equal those at the back 210 of the head. The face ~1~2578 W094/27249 - PCT~S94105176 (240) of the nose (240) defines a frame containing a step or ledge 245. The front end of the boot has a shoulder 249 along its top and bottom and left and right sides.
FIG. 3 is a sectional view of the scanner lO0 with the boot mounted thereon. Boot 230 has detents 230 which are adapted to receive tabs 202. The tab 245 provides a shoulder at the face 240. This shoulder defines a rectangular opening in which the optical element (e.g. the window 250, though it could be another optical element) is received and held in position. The resilience of the boot assures a snug fit of the element. Window 250 has four sides; its top and bottom sides, as well as its left and right sides, fit in close relation inside and upon shoulder (also called a step or ledge) 245 at the scanners face 206. In other words window 250 is held in place by the rubber boot llO, the front end opening of which is of smaller dimensions than window 250 so that the top, bottom and right and left sides define a rubber lip 270, 249 (shown in perspective view in FIG.5), will retain window 250 against shoulder 240.
FIG. 4 shows interior structure of the head, and in particular shows how ribs which are integral with hosing lOl in its nose 143 catch the indentation 230.
US Patent 5,165,782, to Maglica et al. discloses a "Shock absorbing lens holder and anti-roll device" for a flashlight; it teaches a way of holding a filter in front of the flashlight lens. This patent does not teach the apparatus of the present invention, which is composed entirely of shock absorbing material, and which requires no further frame, anti-roll or otherwise, to hold it in place.
Furthermore, Maglica's apparatus requires that it be mounted on a flashlight already having a sealed lens; the present wog4n7249 PCT~S94/05176 21~2578 invention provides what may be a lens, or window, and mounts directly on the scanner BRIEF DESCRIPTION OF THE DRAWINGS
FIG.l is a front perspective elevational view of a bar code scanner and reader system in accordance with a presently preferred embodiment of the invention.
FIG. 2 i~ a right side perspective view of the bar code scanner of Fig. 1 FIG. 3 is a sectional view taken along line 3-3 in Fig. 1.
FIG 4. is a sectional view taken along line 4-4 in FIG. 3.
wo94n7~9 2 ~ 6 2 5 7 8 PCT~S94/05176 DETAILED DESCRIPTION
Referring first to FIGS. 1-4, there is shown a portable bar code laser scanner 100 and a reader. A housing 101 contains the electronics and optics of the unit. It is a bi-part shell having left 12 and Right 14 portions which are assembled together along a parting plane 16 where the portions interconnect. The housing is similar to that disclosed in U.S. Patent 5,200,597, referenced above, but has in addition on its head a scanner window frame, called a boot 110, of elastomeric material (rubber like) which is adapted to receive the head 100 of bar code laser scanner.
The Boot 110 captures a window 250 or other optical element, against the face of the forward end of the housing 210.
FIG. 1, Shows the housing as a bi-part case having two halves 12 and 14 assembled to define a parting line 16.
FIG. 2 shows the scanner with the boot 110 removed.
Indentations provided along ribs at indentations 230 (FIG.3) 202 secure the boot. The exterior dimensions of the head of the scanner which receives the boot (in the nose part 24(7) of the head) are slightly less than those of the rest of the head, which do not receive the boot; The boot can then be essentially flush with the exterior of the housing in the back of the nose 243. In fact, the dimensions at the face 240 on the front end 24 of the nose 243 of the head are merely equal those at the back 210 of the head. The face ~1~2578 W094/27249 - PCT~S94105176 (240) of the nose (240) defines a frame containing a step or ledge 245. The front end of the boot has a shoulder 249 along its top and bottom and left and right sides.
FIG. 3 is a sectional view of the scanner lO0 with the boot mounted thereon. Boot 230 has detents 230 which are adapted to receive tabs 202. The tab 245 provides a shoulder at the face 240. This shoulder defines a rectangular opening in which the optical element (e.g. the window 250, though it could be another optical element) is received and held in position. The resilience of the boot assures a snug fit of the element. Window 250 has four sides; its top and bottom sides, as well as its left and right sides, fit in close relation inside and upon shoulder (also called a step or ledge) 245 at the scanners face 206. In other words window 250 is held in place by the rubber boot llO, the front end opening of which is of smaller dimensions than window 250 so that the top, bottom and right and left sides define a rubber lip 270, 249 (shown in perspective view in FIG.5), will retain window 250 against shoulder 240.
FIG. 4 shows interior structure of the head, and in particular shows how ribs which are integral with hosing lOl in its nose 143 catch the indentation 230.
Claims (7)
1. A bar code scanner comprising:
a housing having a nose seciton with an end face, said end face having an opening defined at least in part by a shoulder, an optical element seated adjacent said shoulder, and a boot of elastomeric material removably positioned around said nose section and securing said element against said shoulder and thus to said housing.
a housing having a nose seciton with an end face, said end face having an opening defined at least in part by a shoulder, an optical element seated adjacent said shoulder, and a boot of elastomeric material removably positioned around said nose section and securing said element against said shoulder and thus to said housing.
2. The assembly of claim 1 wherein said nose section has a maximum dimension at the front of the nose, which tapers down to a smaller circumferential dimension inward from the nose, so as to provide an essentially flush fit of a boot which is installed thereon.
3. The assembly as claimed in claim 2 further comprising lips on said boot along sides and a top and bottom thereof, said lips defining an opening and overlapping the element to be captured.
4. The assembly as claimed in claim 3 wherein said element is transparent.
5. The assembly as claimed in claim 3 wherein said element is non-transparent.
6. The assembly as claimed in claim 3 wherein said element is a Brewster Window.
7. The assembly as claimed in claim 3 wherein said element is a filter.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US5979993A | 1993-05-10 | 1993-05-10 | |
| US08/059,799 | 1993-05-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2162578A1 true CA2162578A1 (en) | 1994-11-24 |
Family
ID=22025317
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002162578A Abandoned CA2162578A1 (en) | 1993-05-10 | 1994-05-10 | Bar code scanner with field replaceable window |
Country Status (7)
| Country | Link |
|---|---|
| US (2) | US5512740A (en) |
| EP (1) | EP0698253A4 (en) |
| CN (1) | CN1122633A (en) |
| AU (1) | AU6909394A (en) |
| BR (1) | BR9406648A (en) |
| CA (1) | CA2162578A1 (en) |
| WO (1) | WO1994027249A1 (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7624924B2 (en) * | 1990-09-10 | 2009-12-01 | Sung Ho Byun | Hand-held compact ergonomic laser scanner with integrated scanner activation or data transmission switch in scanner housing |
| CN1122633A (en) * | 1993-05-10 | 1996-05-15 | Psc股份有限公司 | Bar code scanner with field replaceable window |
| US6131815A (en) * | 1997-09-29 | 2000-10-17 | Intermec Technologies Corporation | Slide-in tray for scanning device |
| DE19846162C2 (en) * | 1998-10-07 | 2000-10-26 | Leuze Electronic Gmbh & Co | Optoelectronic device |
| US6481626B1 (en) | 1998-12-09 | 2002-11-19 | Ncr Corporation | Flush scanner window |
| NL1012189C2 (en) * | 1999-05-31 | 2000-12-01 | Scantech Bv | Bar code scanner for portable or fixed use has anti-tamper system and can be deactivated by acoustic signals |
| AUPS219002A0 (en) * | 2002-05-08 | 2002-06-06 | Lion Eye Institute, The | Digital hand-held imaging device |
| US7044377B2 (en) * | 2003-08-01 | 2006-05-16 | Symbol Technologies Inc. | Plug-and-play imaging and illumination engine for an optical code reader |
| US8408469B2 (en) | 2010-10-07 | 2013-04-02 | Metrologic Instruments, Inc. | Laser scanning assembly having an improved scan angle-multiplication factor |
| EP2990373B1 (en) | 2014-08-29 | 2018-10-03 | Sidel S.p.a. Con Socio Unico | A fluid-agitating tank assembly for a machine for filling containers |
| US9870497B2 (en) * | 2015-12-17 | 2018-01-16 | Datalogic Ip Tech S.R.L. | Window-retaining, protective cap for scanning device |
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| US2163329A (en) * | 1937-09-15 | 1939-06-20 | Casimir J Sipior | Display device |
| US2285658A (en) * | 1940-01-10 | 1942-06-09 | Westinghouse Electric & Mfg Co | Instrument cover |
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| US3229075A (en) * | 1961-12-13 | 1966-01-11 | Yissum Res Dev Co | Reading device |
| US3587184A (en) * | 1969-06-23 | 1971-06-28 | Master Specialties Co | Panel seal |
| DE7029487U (en) * | 1970-08-05 | 1971-02-11 | Licentia Gmbh | ARRANGEMENT TO PREVENT OBSERVATION DEVICES. |
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| CN1122633A (en) * | 1993-05-10 | 1996-05-15 | Psc股份有限公司 | Bar code scanner with field replaceable window |
-
1994
- 1994-05-10 CN CN94192053.4A patent/CN1122633A/en active Pending
- 1994-05-10 CA CA002162578A patent/CA2162578A1/en not_active Abandoned
- 1994-05-10 AU AU69093/94A patent/AU6909394A/en not_active Abandoned
- 1994-05-10 BR BR9406648A patent/BR9406648A/en not_active Application Discontinuation
- 1994-05-10 WO PCT/US1994/005176 patent/WO1994027249A1/en not_active Application Discontinuation
- 1994-05-10 EP EP94917341A patent/EP0698253A4/en not_active Withdrawn
- 1994-09-07 US US08/302,093 patent/US5512740A/en not_active Expired - Fee Related
-
1995
- 1995-12-28 US US08/580,241 patent/US5663551A/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1122633A (en) | 1996-05-15 |
| AU6909394A (en) | 1994-12-12 |
| US5512740A (en) | 1996-04-30 |
| BR9406648A (en) | 1996-03-05 |
| EP0698253A4 (en) | 1997-11-12 |
| US5663551A (en) | 1997-09-02 |
| EP0698253A1 (en) | 1996-02-28 |
| WO1994027249A1 (en) | 1994-11-24 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Discontinued |