Pi-Yi Chang

Follow

Person

Tali, TW

People

Patents Grantslast 30 patents

Information Patent Grant
Effort-saving stapler
- Patent number 7,644,849
- Issue date Jan 12, 2010
- Apex Mfg. Co., Ltd.
- Eric Tsai
- B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
Information Patent Grant
Effort-saving stapler
- Patent number 7,604,149
- Issue date Oct 20, 2009
- Apex Mfg. Co., Ltd.
- Eric Tsai
- B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS

Patents Applicationslast 30 patents

Information Patent Application
Effort-Saving Stapler
- Publication number 20080223901
- Publication date Sep 18, 2008
- Eric Tsai
- B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
Information Patent Application
EASY STAPLER
- Publication number 20080223902
- Publication date Sep 18, 2008
- Eric Tsai
- B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS