DE4336850A1 - Method and device for compressing a stack of high-temperature fuel cells - Google Patents
Method and device for compressing a stack of high-temperature fuel cellsInfo
- Publication number
- DE4336850A1 DE4336850A1 DE4336850A DE4336850A DE4336850A1 DE 4336850 A1 DE4336850 A1 DE 4336850A1 DE 4336850 A DE4336850 A DE 4336850A DE 4336850 A DE4336850 A DE 4336850A DE 4336850 A1 DE4336850 A1 DE 4336850A1
- Authority
- DE
- Germany
- Prior art keywords
- stack
- temperature
- fuel cells
- bellows
- pressure
- 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.)
- Ceased
Links
- 239000000446 fuel Substances 0.000 title claims abstract description 20
- 238000000034 method Methods 0.000 title claims description 5
- 230000006835 compression Effects 0.000 claims abstract description 5
- 238000007906 compression Methods 0.000 claims abstract description 5
- 238000001704 evaporation Methods 0.000 claims description 3
- 230000001419 dependent effect Effects 0.000 claims description 2
- 239000007787 solid Substances 0.000 claims description 2
- 239000007788 liquid Substances 0.000 claims 1
- 239000007789 gas Substances 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 239000003570 air Substances 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 229910021525 ceramic electrolyte Inorganic materials 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000011038 discontinuous diafiltration by volume reduction Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000005293 physical law Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B1/00—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen
- B30B1/003—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by an elastic bag or diaphragm expanded by fluid pressure
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/24—Grouping of fuel cells, e.g. stacking of fuel cells
- H01M8/2465—Details of groupings of fuel cells
- H01M8/247—Arrangements for tightening a stack, for accommodation of a stack in a tank or for assembling different tanks
- H01M8/248—Means for compression of the fuel cell stacks
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
Abstract
Description
Die Erfindung richtet sich auf eine Vorrichtung zum Ver pressen eines Stapels von Hochtemperatur-Brennstoffzellen, wobei der Stapel in einem Rahmen oder einem Käfig eingefaßt ist sowie auf ein Verfahren zur Aufbringung des für den ge wünschten elektrischen Kontakt notwendigen Anpreßdruckes bei derartigen Brennstoffzellen-Stapeln.The invention is directed to a device for ver pressing a stack of high temperature fuel cells, the stack being enclosed in a frame or a cage is as well as a procedure for applying the for the ge desired electrical contact necessary contact pressure in such fuel cell stacks.
Beispielsweise aus der WO-A-92/16 029 ist ein derartiger Brennstoffzellenstapel bekannt, ohne daß dort näher auf die Art der Verpressung derartiger Brennstoffzellen eingegangen wird.One such is from WO-A-92/16 029 Known fuel cell stack, without being closer to the Type of compression of such fuel cells received becomes.
Bei derartigen Brennstoffzellen ist es von besonderer Wich tigkeit, daß die aneinander anliegenden Kontaktflächen be nachbarter Zellen in Kontakt bleiben, auch dann, wenn die Zellen unterschiedlichen Temperaturen unterworfen sind. Dies geschieht insbesondere dann, wenn ein solcher Zellen verband aus der Umgebungstemperatur in die Arbeitstempera tur gebracht wird bzw. bei Abschalten wieder auf Umgebungs temperatur abkühlt. Es ist bekannt, die Brennstoffzellen als Paket zu packen, wobei bei Umgebungstemperatur für eine entsprechende Verpressung gesorgt wird, was beispielsweise durch Zuganker über Gewindebolzen oder ähnliche mechanische Mittel geschehen kann. With such fuel cells, it is of particular importance act that the abutting contact surfaces be neighboring cells remain in contact, even if the Cells are subjected to different temperatures. This happens especially when such cells connected from the ambient temperature to the working temperature is brought to the environment or when switched off temperature cools. It is known the fuel cells to pack as a package, at ambient temperature for one appropriate compression is taken care of, for example by tie rods via threaded bolts or similar mechanical Funds can happen.
Dabei ist es zwangsläufig nicht möglich, Dehnungen durch Erhitzung in optimaler Weise aufzufangen, da sich die Rahmenelemente regelmäßig anders ausdehnen als die Zellen. Wird ein Verspannen im heißen Zustand vorgenommen, besteht die Gefahr der Lockerung des Verbandes, wenn sich dieser abkühlt.It is inevitably not possible to stretch through To absorb heating in an optimal way, since the Extend frame elements regularly differently than the cells. If tensioning is carried out while hot, there is the risk of loosening the bandage if this cools down.
Aufgabe der Erfindung ist die Schaffung einer Lösung, mit der eine Optimierung des Verpressens der Zellen gegeneinan der im Verband möglich gemacht wird.The object of the invention is to provide a solution with which optimizes the pressing of the cells against each other which is made possible in the association.
Mit einer gattungsgemäßen Vorrichtung wird diese Aufgabe gemäß der Erfindung dadurch gelöst, daß zwischen einer Sta pelstirnseite und dem Rahmen ein Preß- bzw. Expansions element vorgesehen ist.With a generic device, this task solved according to the invention in that between a sta pel face and the frame a press or expansion element is provided.
Mit dem Vorsehen eines gesonderten Preß- bzw. Expansions elementes ist es möglich, den Anpreßdruck den jeweiligen Betriebsbedingungen anzupassen und den Druck zu optimieren.With the provision of a separate press or expansion elementes, it is possible to adjust the contact pressure Adapt operating conditions and optimize the pressure.
So kann beispielsweise der Brennstoffzellenstapel bei Umge bungstemperatur zusammengebaut werden und einer sanften Vorspannung unterworfen werden. Heizt sich die Baugruppe auf, die aus einer Vielzahl von Bipolar- oder Trennplatten, keramischen Elektrolytplatten, Kontaktgeweben u. dgl. be steht, ist es möglich, die unterschiedlichen thermischen Längendehnungen dieser Stapelelemente auszugleichen und bei Erreichen der Betriebstemperatur die Elemente in dem dann eingenommenen, in der Regel gedehnten Zustand mit dem Preß element so zu verpressen, daß die gewünschten guten elektrischen Kontakte gegeben sind.For example, the fuel cell stack at Umge training temperature and a gentle one Be subjected to bias. The assembly heats up made up of a variety of bipolar or separation plates, ceramic electrolyte plates, contact fabrics and. The like stands, it is possible to use the different thermal Compensate for elongations of these stacking elements and at The elements then reach the operating temperature assumed, usually stretched state with the press element so that the desired good electrical contacts are given.
Das Preßelement kann in unterschiedlicher Weise ausgebildet sein, wie dies Gegenstand von Unteransprüchen ist.The pressing element can be designed in different ways be how this is the subject of subclaims.
Zweckmäßig ist das Preßelement als innendruckbeaufschlagter Balg ausgebildet. Dieser kann mit einer externen Druckmit telzufuhr versehen sein oder aber auch geschlossen ausge bildet sein. Bei der geschlossenen Ausbildung kann ein tem peraturabhängiges Füllmedium im Inneren des Balges einge schlossen sein, hierbei kann es sich um ein Gas handeln, das sich nach den physikalischen Gesetzen bei Erwärmung ausdehnt, es kann sich aber auch um eine verdampfende Flüs sigkeit handeln oder aber auch um einen Feststoff, der bei Wechsel des Aggregat-Zustandes für eine Volumenvergrößerung sorgt oder bei Abkühlen für eine Volumenverminderung und damit kein Druckaufbau bei Temperaturerhöhung und Druckab bau bei Temperatursenkung.The pressing element is expediently subjected to internal pressure Bellows trained. This can be done with an external print be supplied or closed off be educated. With closed training, a tem temperature-dependent filling medium inside the bellows be closed, this can be a gas, which is based on the physical laws of warming expands, but it can also be an evaporating river act or a solid that is Change of the aggregate state for an increase in volume ensures or when cooling for a volume reduction and thus no pressure build-up when the temperature rises and construction when temperature drops.
Ist der Balg mit einer externen Druckmittelquelle verbun den, so kann beispielsweise nach Erreichen der Betriebstem peratur der Balg mit Luft, Stickstoff, Argon oder einem anderen Gas gefüllt werden, bis der gewünschte Kontaktdruck erreicht ist.Is the bellows connected to an external pressure medium source the, for example after reaching the Betriebsstem temperature of the bellows with air, nitrogen, argon or a other gas can be filled until the desired contact pressure is reached.
Eine Verfahrensführung kann erfindungsgemäß darin liegen, daß die Brennstoffzellen bei Umgebungstemperatur einem ge ringen Vorpreßdruck ausgesetzt werden, wobei der notwendige Anpreßdruck bis zum Erreichen der Betriebstemperatur des Stapels aufgebaut wird. In besonderer Ausgestaltung kann vorgesehen sein, daß ein sich bei Temperaturerhöhung aus dehnendes Medium innerhalb eines Druckkörpers eingesetzt wird.According to the invention, a procedure can be that the fuel cells ge at ambient temperature rings are subjected to pre-compression, taking the necessary Contact pressure until the operating temperature of the Stack is built. In a special embodiment can be provided for a temperature rise stretching medium used within a pressure body becomes.
Natürlich ist es erfindungsgemäß auch möglich, z. B. den Druck über eine hydraulische oder mechanische Vorrichtung aufzubauen, die im heißen Bereich des Brennstoffzellensta pels ebenso angeordnet werden kann wie auch außerhalb des heißen Bereiches, wobei die Anpreßkraft beispielsweise über ein Gestänge auf den Brennstoffzellenstapel übertragbar ist.Of course, it is also possible according to the invention, for. B. the Pressure through a hydraulic or mechanical device build up in the hot area of the fuel cell sta pels can be arranged as well as outside the hot area, the contact pressure for example above a linkage can be transferred to the fuel cell stack is.
Die Erfindung ist nachstehend anhand der Zeichnung bei spielsweise näher erläutert. Diese zeigt inThe invention is below with reference to the drawing explained in more detail, for example. This shows in
Fig. 1 eine prinzipielle Darstellung eines Brennstoff zellenstapels sowie in Fig. 1 is a schematic diagram of a fuel cell stack and in
Fig. 2 eine vereinfachte Aufsicht auf einen solchen Stapel mit einem Preß- bzw. Expansionselement. Fig. 2 is a simplified plan view of such a stack with a pressing or expansion element.
In Fig. 1 ist der Brennstoffzellenstapel allgemein mit 1 bezeichnet. Er besteht aus einer Mehrzahl von Hochtempe ratur-Brennstoffzellen 2, die in einem Rahmen 3 zusammen gefaßt sind.The fuel cell stack is generally designated 1 in FIG. 1. It consists of a plurality of high-temperature fuel cells 2 , which are summarized in a frame 3 .
Wie sich aus Fig. 2 ergibt, ist im Inneren des Rahmens 3 eine allgemein mit 4 bezeichnete Vorrichtung zum Verpressen der Hochtemperatur-Brennstoffzellen 2 gegeneinander vorge sehen, wobei die Vorrichtung 4 im dargestellten Beispiel von einem innendruckbeaufschlagten Balg 5 gebildet ist. Wie dort dargestellt, ist der Balg mit einer Druckmittelzufuhr leitung 6 versehen, über die z. B. ein Druckgas dort einge speist werden kann.As can be seen from Fig. 2, inside the frame 3 is a device generally designated 4 for pressing the high-temperature fuel cells 2 against each other, the device 4 in the example shown being formed by an internal pressure bellows 5 . As shown there, the bellows is provided with a pressure medium supply line 6 , via which, for. B. a compressed gas can be fed there.
Der Balg 5 kann aber auch als geschlossenes mit einem sich bei Temperaturerhöhung ausdehnenden Medium gefülltes Ele ment ausgebildet sein.The bellows 5 can also be designed as a closed element filled with an expanding medium when the temperature rises.
Neben der hier die Expansion bewirkenden Medium gefüllten Balg 5 kann die Vorrichtung 4 auch mechanisch ausgebildet sein, was in den Figuren nicht näher dargestellt ist.In addition to the bellows 5 filled with the medium causing the expansion, the device 4 can also be designed mechanically, which is not shown in the figures.
Claims (7)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4336850A DE4336850A1 (en) | 1993-10-28 | 1993-10-28 | Method and device for compressing a stack of high-temperature fuel cells |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4336850A DE4336850A1 (en) | 1993-10-28 | 1993-10-28 | Method and device for compressing a stack of high-temperature fuel cells |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE4336850A1 true DE4336850A1 (en) | 1995-05-04 |
Family
ID=6501272
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE4336850A Ceased DE4336850A1 (en) | 1993-10-28 | 1993-10-28 | Method and device for compressing a stack of high-temperature fuel cells |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE4336850A1 (en) |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996036086A1 (en) * | 1995-05-10 | 1996-11-14 | Mtu Motoren- Und Turbinen-Union Friedrichshafen Gmbh | Fuel cell arrangement |
| DE19650904A1 (en) * | 1996-12-07 | 1998-06-10 | Forschungszentrum Juelich Gmbh | Device for safeguarding the mechanical integrity of a fuel cell e.g. SOFC or high temperature type, stack |
| EP0851519A1 (en) * | 1995-07-07 | 1998-07-01 | Honda Giken Kogyo Kabushiki Kaisha | Fuel cell and method of its fastening |
| WO2003003497A1 (en) * | 2001-06-27 | 2003-01-09 | The Morgan Crucible Company Plc | Fuel cell or electrolyser construction |
| WO2003028141A2 (en) * | 2001-09-26 | 2003-04-03 | Global Thermoelectric Inc. | Solid oxide fuel cell compression bellows |
| NL1019397C2 (en) * | 2001-11-19 | 2003-06-13 | Willem Jan Oosterkamp | Fuel cell stack in a pressure vessel. |
| DE10201148A1 (en) * | 2002-01-15 | 2003-07-31 | H2 Interpower Brennstoffzellen | Method and device for applying a contact pressure to the surface electrodes of a fuel cell / hydrolyser |
| EP1416569A2 (en) * | 2002-06-24 | 2004-05-06 | Delphi Technologies, Inc. | Passive gas spring for solid-oxide fuell cell stack loading |
| DE10250345A1 (en) * | 2002-10-29 | 2004-05-13 | Volkswagen Ag | Vehicle fuel cell arrangement has stack of high temperature fuel cells in housing, supported relative to housing by dilating mat, with both axial ends of stack being supported relative to housing by dilation mats |
| FR2865577A1 (en) * | 2004-01-27 | 2005-07-29 | Peugeot Citroen Automobiles Sa | Fuel cell with a proton exchange membrane incorporating cell components that are assembled by a simple clipping mechanism |
| EP1908145A1 (en) * | 2005-06-29 | 2008-04-09 | Norsk Hydro ASA | An electrochemical cell stack |
| WO2008074280A1 (en) * | 2006-12-21 | 2008-06-26 | Enerday Gmbh | Housing for receiving and tensioning at least one fuel cell stack |
| DE102007011793A1 (en) * | 2007-03-12 | 2008-09-18 | Mtu Cfc Solutions Gmbh | Sealing device for a fuel cell assembly |
| US7709120B2 (en) | 2007-06-28 | 2010-05-04 | Gm Global Technology Operations, Inc. | Method to maximize fuel cell stack shorting resistance |
| DE102011077061A1 (en) * | 2011-06-07 | 2012-12-13 | Siemens Aktiengesellschaft | Power conversion unit useful for electrochemical energy conversion, comprises base plate, cover plate, a plate stack, which is arranged between the base plate and the cover plate, and a pressure cushion |
| WO2021121779A1 (en) * | 2019-12-17 | 2021-06-24 | Robert Bosch Gmbh | Fuel cell with an adjusting device to compensate for the settling behaviour within the stack structure |
| WO2021121781A1 (en) * | 2019-12-17 | 2021-06-24 | Robert Bosch Gmbh | Fuel cell with an adjustment device for compensating for the settling behavior within a stacked construction |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0329161A1 (en) * | 1988-02-19 | 1989-08-23 | Ishikawajima-Harima Heavy Industries Co., Ltd. | Arrangement for tightening stack of fuel cell elements |
-
1993
- 1993-10-28 DE DE4336850A patent/DE4336850A1/en not_active Ceased
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0329161A1 (en) * | 1988-02-19 | 1989-08-23 | Ishikawajima-Harima Heavy Industries Co., Ltd. | Arrangement for tightening stack of fuel cell elements |
Cited By (26)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996036086A1 (en) * | 1995-05-10 | 1996-11-14 | Mtu Motoren- Und Turbinen-Union Friedrichshafen Gmbh | Fuel cell arrangement |
| US6696185B1 (en) | 1995-07-07 | 2004-02-24 | Honda Giken Kogyo Kabushiki Kaisha | Fuel cell and fastening method therefor |
| EP0851519A4 (en) * | 1995-07-07 | 2000-09-13 | Honda Motor Co Ltd | Fuel cell and method of its fastening |
| EP0851519A1 (en) * | 1995-07-07 | 1998-07-01 | Honda Giken Kogyo Kabushiki Kaisha | Fuel cell and method of its fastening |
| DE19650904A1 (en) * | 1996-12-07 | 1998-06-10 | Forschungszentrum Juelich Gmbh | Device for safeguarding the mechanical integrity of a fuel cell e.g. SOFC or high temperature type, stack |
| DE19650904C2 (en) * | 1996-12-07 | 2001-07-26 | Forschungszentrum Juelich Gmbh | Device for ensuring the mechanical integrity of a fuel cell stack |
| WO2003003497A1 (en) * | 2001-06-27 | 2003-01-09 | The Morgan Crucible Company Plc | Fuel cell or electrolyser construction |
| WO2003028141A2 (en) * | 2001-09-26 | 2003-04-03 | Global Thermoelectric Inc. | Solid oxide fuel cell compression bellows |
| WO2003028141A3 (en) * | 2001-09-26 | 2004-02-26 | Global Thermoelectric Inc | Solid oxide fuel cell compression bellows |
| NL1019397C2 (en) * | 2001-11-19 | 2003-06-13 | Willem Jan Oosterkamp | Fuel cell stack in a pressure vessel. |
| US7041410B2 (en) | 2001-11-19 | 2006-05-09 | Willem Jan Oosterkamp | Fuel cell stack in a pressure vessel |
| EP1313162A3 (en) * | 2001-11-19 | 2006-11-29 | Willem Jan Oosterkamp | Fuel cell stack in a pressure vessel |
| DE10201148A1 (en) * | 2002-01-15 | 2003-07-31 | H2 Interpower Brennstoffzellen | Method and device for applying a contact pressure to the surface electrodes of a fuel cell / hydrolyser |
| EP1416569A3 (en) * | 2002-06-24 | 2004-07-14 | Delphi Technologies, Inc. | Passive gas spring for solid-oxide fuell cell stack loading |
| EP1416569A2 (en) * | 2002-06-24 | 2004-05-06 | Delphi Technologies, Inc. | Passive gas spring for solid-oxide fuell cell stack loading |
| DE10250345A1 (en) * | 2002-10-29 | 2004-05-13 | Volkswagen Ag | Vehicle fuel cell arrangement has stack of high temperature fuel cells in housing, supported relative to housing by dilating mat, with both axial ends of stack being supported relative to housing by dilation mats |
| FR2865577A1 (en) * | 2004-01-27 | 2005-07-29 | Peugeot Citroen Automobiles Sa | Fuel cell with a proton exchange membrane incorporating cell components that are assembled by a simple clipping mechanism |
| EP1908145A1 (en) * | 2005-06-29 | 2008-04-09 | Norsk Hydro ASA | An electrochemical cell stack |
| WO2008074280A1 (en) * | 2006-12-21 | 2008-06-26 | Enerday Gmbh | Housing for receiving and tensioning at least one fuel cell stack |
| DE102007011793A1 (en) * | 2007-03-12 | 2008-09-18 | Mtu Cfc Solutions Gmbh | Sealing device for a fuel cell assembly |
| US8460837B2 (en) | 2007-03-12 | 2013-06-11 | Uwe Burmeister | Sealing device for a fuel cell arrangement |
| US7709120B2 (en) | 2007-06-28 | 2010-05-04 | Gm Global Technology Operations, Inc. | Method to maximize fuel cell stack shorting resistance |
| DE102008030080B4 (en) * | 2007-06-28 | 2017-08-17 | GM Global Technology Operations LLC (n. d. Ges. d. Staates Delaware) | Method for producing a fuel cell and method for generating a fuel cell stack |
| DE102011077061A1 (en) * | 2011-06-07 | 2012-12-13 | Siemens Aktiengesellschaft | Power conversion unit useful for electrochemical energy conversion, comprises base plate, cover plate, a plate stack, which is arranged between the base plate and the cover plate, and a pressure cushion |
| WO2021121779A1 (en) * | 2019-12-17 | 2021-06-24 | Robert Bosch Gmbh | Fuel cell with an adjusting device to compensate for the settling behaviour within the stack structure |
| WO2021121781A1 (en) * | 2019-12-17 | 2021-06-24 | Robert Bosch Gmbh | Fuel cell with an adjustment device for compensating for the settling behavior within a stacked construction |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| OP8 | Request for examination as to paragraph 44 patent law | ||
| 8127 | New person/name/address of the applicant |
Owner name: KLAUS HERRMANN AG, 58239 SCHWERTE, DE |
|
| 8131 | Rejection |