Chiou-Mai Chang

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Taichung, TW

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Patents Grantslast 30 patents

Information Patent Grant
Display structure for wrench
- Patent number 10,967,498
- Issue date Apr 6, 2021
- Tsan-Chang Lee
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Grant
Complex wrench
- Patent number 8,701,524
- Issue date Apr 22, 2014
- Chiou-Mai Chang
- B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
Information Patent Grant
Wrench with outstanding grip
- Patent number 7,387,052
- Issue date Jun 17, 2008
- Chiou-Mai Chang
- B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS

Patents Applicationslast 30 patents

Information Patent Application
DISPLAY STRUCTURE FOR WRENCH
- Publication number 20200130166
- Publication date Apr 30, 2020
- Tsan-Chang Lee
- B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
Information Patent Application
WRENCH
- Publication number 20160229040
- Publication date Aug 11, 2016
- Cheng-Pu Yang
- B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
Information Patent Application
COMPLEX WRENCH
- Publication number 20130091993
- Publication date Apr 18, 2013
- Chiou-Mai Chang
- B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
Information Patent Application
Wrench with outstanding grip
- Publication number 20070261520
- Publication date Nov 15, 2007
- Chiou-Mai Chang
- B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS