Yu Yen CHIEN

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Taichung, TW

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Patents Grantslast 30 patents

Information Patent Grant
Ratchet wrench
- Patent number 8,893,588
- Issue date Nov 25, 2014
- Yu Yen Chien
- B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
Information Patent Grant
Ratchet wrench
- Patent number 8,555,752
- Issue date Oct 15, 2013
- Yu Yen Chien
- B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS

Patents Applicationslast 30 patents

Information Patent Application
RATCHET WRENCH DEVICE
- Publication number 20140041488
- Publication date Feb 13, 2014
- Yu Yen CHIEN
- B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
Information Patent Application
RATCHET TOOL
- Publication number 20140041982
- Publication date Feb 13, 2014
- Yu Yen Chien
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Application
RATCHET WRENCH
- Publication number 20140041487
- Publication date Feb 13, 2014
- Yu Yen CHIEN
- B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
Information Patent Application
RATCHET SOCKET TOOL DEVICE
- Publication number 20140041489
- Publication date Feb 13, 2014
- Yu Yen CHIEN
- B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
Information Patent Application
NAIL GUIDING DEVICE FOR COIL NAILER
- Publication number 20130193182
- Publication date Aug 1, 2013
- SAMSON POWER TOOL CO., LTD.
- YU-CHUAN CHIEN
- B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS