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Dongguan Dazhan Metal Co., Ltd.
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Dongguan City, CN
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Patents Grants
last 30 patents
Information
Patent Grant
Humanized convenient door lock
Patent number
9,963,918
Issue date
May 8, 2018
DONGGUAN DAZHAN METAL CO., LTD.
Tung-Ming Chang
E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Patents Applications
last 30 patents
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Patent Application
HUMANIZED CONVENIENT DOOR LOCK
Publication number
20170074011
Publication date
Mar 16, 2017
Dongguan Dazhan Metal Co., Ltd.
Tung-Ming Chang
E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
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last 30 trademarks