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Siou Ru Chen
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Taichung City, TW
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last 30 patents
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Patent Grant
Screwdriver having removable hidden tips
Patent number
7,066,061
Issue date
Jun 27, 2006
Yi Ying Chen
B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
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Patent Grant
Screwdriver having release mechanism
Patent number
7,051,626
Issue date
May 30, 2006
Yi Ying Chen
Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC