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Dragon Chang
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Hsinchu City, TW
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Patents Grants
last 30 patents
Information
Patent Grant
Folding shaft for umbrellas
Patent number
7,588,042
Issue date
Sep 15, 2009
Golden Rain Enterprise Co., Ltd.
Dragon Chang
Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information
Patent Grant
Mechanism for opening and collapsing umbrella
Patent number
7,575,009
Issue date
Aug 18, 2009
Golden Rain Enterprise Co., Ltd.
Dragon Chang
A45 - HAND OR TRAVELLING ARTICLES
Patents Applications
last 30 patents
Information
Patent Application
Folding shaft for umbrellas
Publication number
20080149153
Publication date
Jun 26, 2008
Dragon Chang
A45 - HAND OR TRAVELLING ARTICLES
Information
Patent Application
Mechanism for opening and collapsing umbrella
Publication number
20080087311
Publication date
Apr 17, 2008
Dragon Chang
A45 - HAND OR TRAVELLING ARTICLES
Information
Patent Application
Safety device for switch of umbrella
Publication number
20070277862
Publication date
Dec 6, 2007
Dragon Chang
A45 - HAND OR TRAVELLING ARTICLES