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US Patent D1006591 Case for door exit device

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Patent attributes

Patent Jurisdiction

United States Patent and Trademark Office

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Patent Number

Patent Inventor Names

Wen-Fang Chang0

Date of Patent

December 5, 2023

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Patent Application Number

297156330

Date Filed

December 3, 2019

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Patent Citations

US Patent D906084 Exit device with status indicator

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US Patent D906085 Exit device with status indicator

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US Patent D541633 Exit device centercase cover

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US Patent D623499 Cover for a fireproof door lock

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US Patent D656386 Cover for a passageway door lock

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US Patent 8267441 Operating device for lock

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US Patent D669333 Passageway door lock

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US Patent D669334 Passageway door lock

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Patent Primary Examiner

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CPC Code

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