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Frankie Chen
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Taipei, TW
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Patents Grants
last 30 patents
Information
Patent Grant
Triplicate diving gas valve device
Patent number
6,513,525
Issue date
Feb 4, 2003
Frankie Chen
B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT
Information
Patent Grant
Scuba diving regulator
Patent number
6,332,464
Issue date
Dec 25, 2001
Frankie Chen
B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT
Information
Patent Grant
Amphibious audible alarm device
Patent number
5,951,205
Issue date
Sep 14, 1999
Frankie Chen
B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT
Information
Patent Grant
Integrally-encased diving control valve means
Patent number
5,788,415
Issue date
Aug 4, 1998
Frankie Chen
B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT
Patents Applications
last 30 patents
Information
Patent Application
Triplicate diving gas valve device
Publication number
20020157669
Publication date
Oct 31, 2002
Frankie Chen
B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT