Chen-Tung Chen

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Ta Chia Chen, Taichung Hsien, TW

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Patents Grantslast 30 patents

Information Patent Grant
Hand tool that can replace tips easily and quickly
- Patent number 8,267,408
- Issue date Sep 18, 2012
- Chen-Tsung Chen
- B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
Information Patent Grant
Adjustable wrench that clamps a workpiece exactly and tightly
- Patent number 7,913,589
- Issue date Mar 29, 2011
- Chen-Tsung Chen
- B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
Information Patent Grant
Golf bag folding stand
- Patent number 5,351,921
- Issue date Oct 4, 1994
- Chen-Tung Chen
- A63 - SPORTS GAMES AMUSEMENTS
Information Patent Grant
Toy Xylophone
- Patent number 4,885,972
- Issue date Dec 12, 1989
- Chen-Tsung Chen
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Grant
Toy construction ring
- Patent number D304213
- Issue date Oct 24, 1989
- Chen-Tsung Chen
- D21 - Games, toys, and sports goods
Information Patent Grant
Polygonal ring-like toy building block having means for interconnec...
- Patent number 4,804,350
- Issue date Feb 14, 1989
- Chen-Tsung Chen
- A63 - SPORTS GAMES AMUSEMENTS
Information Patent Grant
Toy building block set
- Patent number 4,708,684
- Issue date Nov 24, 1987
- Chen-Tsung Chen
- A63 - SPORTS GAMES AMUSEMENTS
Information Patent Grant
Toy building block set
- Patent number 4,556,394
- Issue date Dec 3, 1985
- Chen-Tsung Chen
- A63 - SPORTS GAMES AMUSEMENTS

Patents Applicationslast 30 patents

Information Patent Application
Open-Ended Ratchet Wrench
- Publication number 20100122608
- Publication date May 20, 2010
- Chen-Tsung Chen
- B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
Information Patent Application
Adjustable Wrench That Clamp a Workpiece Exactly and Tightly
- Publication number 20100122610
- Publication date May 20, 2010
- Chen-Tsung Chen
- B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
Information Patent Application
Hand Tool that can Replace Tips Easily and Quickly
- Publication number 20100101382
- Publication date Apr 29, 2010
- Chen-Tsung Chen
- B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
Information Patent Application
Ratchet Open End Wrench
- Publication number 20100101376
- Publication date Apr 29, 2010
- Chen-Tsung Chen
- B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS