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Tsun Ding Chen
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Taipei, TW
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last 30 patents
Information
Patent Grant
Cleaning device with a detergent control structure
Patent number
6,116,798
Issue date
Sep 12, 2000
Tsun-Fu Chen
A46 - BRUSHWARE
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Patent Grant
Spherical puzzle toy
Patent number
5,836,584
Issue date
Nov 17, 1998
Tsun Ding Chen
A63 - SPORTS GAMES AMUSEMENTS
Information
Patent Grant
Spherical puzzle toy
Patent number
5,816,571
Issue date
Oct 6, 1998
Tsun Ding Chen
A63 - SPORTS GAMES AMUSEMENTS