Búsqueda Imágenes Maps Play YouTube Noticias Gmail Drive Más »
Búsqueda avanzada de patentes | Historial web | Iniciar sesión

Patentes

Citada por

Patente citante Fecha de presentación Fecha de emisión Cesionario original Título
US399664128 Abr 197514 Dic 1976Central Quality Industries, Inc.Tipping force reducing apparatus
US404156913 Sep 197616 Ago 1977Separator system
US407248320 May 19767 Feb 1978Doyle Vacuum Cleaner CompanyVacuum cleaners
US408010414 May 197621 Mar 1978Wet-dry vacuum apparatus with pump means for discharging liquid therefrom
US418597415 Dic 197729 Ene 1980Shop-Vac CorporationIntegral filter cage and lid for cannister type vacuum cleaner
US462856615 Nov 198516 Dic 1986John C. BertelsenFiltering system for paper handling machines
US46549268 Abr 19857 Abr 1987Central Quality Industries, Inc.Vacuum cleaner
US472682522 Sep 198623 Feb 1988GPAC, Inc.Disposable HEPA filtration device
US478387811 Mar 198715 Nov 1988Central Quality Industries, Inc.Vacuum cleaner
US485826925 Ene 198922 Ago 1989The Scott Fetzer CompanyWet/dry vac
US490626512 Ene 19896 Mar 1990Shop-Vac CorporationFilter and installation means for dry material filter for electric vacuum cleaner
US494751329 Mar 198814 Ago 1990Connector for a convertible blower-vacuum
US522423818 Abr 19916 Jul 1993Ryobi Motor Products Corp.Horizontal canister vacuum
US525985423 Dic 19929 Nov 1993GPAC, Inc.Disposable HEPA filtration device
US538830127 Sep 199314 Feb 1995The Hoover CompanyRim seal for vacuum cleaner having dual storage tanks
US54288652 Feb 19934 Jul 1995Water-filtered vacuum sander
US54407809 Dic 199315 Ago 1995GMI Holdings, Inc.Tip-resistant canister for upright vacuum cleaners
US548253612 Abr 19949 Ene 1996Solvay Specialty Chemicals, Inc.Apparatus for containment and scrubbing of toxic gas from a leakage location and method therefor
US555560020 Mar 199517 Sep 1996Non-tipping wet/dry vacuum
US557048912 Jul 19955 Nov 1996Liquid extraction device for a vacuum cleaner
US560741110 Feb 19924 Mar 1997Scott N. HeironimusContainment and treatment aspirator system and method
US56642837 Jun 19959 Sep 1997GMI Holdings, Inc.Tip resistant canister for upright vaccum cleaners
US578308621 Ago 199621 Jul 1998W. L. Gore & Associates, Inc.Filter for a wet/dry vacuum cleaner for wet material collection
US585563424 Jun 19975 Ene 1999Shop Vac CorporationFilter retainer for a vacuum cleaner
US600989817 Sep 19984 Ene 2000Donaldson Company, Inc.Valve assembly for preventing liquid ingestion and methods
US604824919 Jul 199911 Abr 2000Plastic building block toy cleanup vacuum attachment
US606315112 Jun 199816 May 2000The Spencer Turbine Company
Connecticut Natural Gas Corporation
Mobile apparatus and method for clearing gas lines
US60819613 Feb 19994 Jul 2000Portable vacuum cleaner
US62095597 Dic 19993 Abr 2001Donaldson Company, Inc.Valve assembly for preventing liquid ingestion and methods
US62104577 Jun 19993 Abr 2001Lee Valley Tools Ltd.Transparent lid for auxiliary dust removal receptacle
US62131467 Dic 199910 Abr 2001Donaldson Company, Inc.Valve assembly for preventing liquid ingestion and methods
US624516012 May 200012 Jun 2001The Spencer Turbine Company
Connecticut Natural Gas Corporation
Method for clearing gas lines
US63474296 Ago 199919 Feb 2002Emerson Electric Co.Wet/dry vacuum drain system
US65430851 Mar 20028 Abr 2003Emerson Electric Co.Vacuum appliance having push and pull handles
US696693511 Ago 200322 Nov 2005Filter cleaner for wet/dry vacuum
US728730110 Jul 200430 Oct 2007Black & Decker Inc.Utility vacuum
US745570710 Feb 200325 Nov 2008Donaldson Company, Inc.Reverse flow air filter arrangement and method
US811771322 Sep 200621 Feb 2012BISSELL Homecare, Inc.Vacuum cleaner with two stage filtration
US823054913 Mar 200931 Jul 2012BISSELL Homecare, Inc.Upright extractor
USD3571846 Ago 199311 Abr 1995Long neck spout
USD35733612 May 199311 Abr 1995The Hoover CompanyVacuum cleaner
USD35777319 May 199325 Abr 1995The Hoover CompanyCombined wet and dry vacuum cleaner
USD3607184 Ago 199325 Jul 1995GMI Holdings, Inc.Power head for a wet/dry vacuum
USD36117919 May 19938 Ago 1995The Hoover CompanyCombined wet and dry vacuum cleaner
USD3651784 Ago 199312 Dic 1995GMI Holdings, Inc.Canister exterior for a wet/dry vacuum
USD40641910 Feb 19972 Mar 1999Trash can mounted vacuum recovery system for loose-fill packaging material