Zhang-yong Jian

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Taichung, TW

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Patents Grantslast 30 patents

Information Patent Grant
Laser level with temperature control device and temperature control...
- Patent number 7,395,604
- Issue date Jul 8, 2008
- Asia Optical Co., Inc.
- Pie-Yau Chien
- G01 - MEASURING TESTING

Patents Applicationslast 30 patents

Information Patent Application
LASER LEVEL WITH TEMPERATURE CONTROL DEVICE AND TEMPERATURE CONTROL...
- Publication number 20060272167
- Publication date Dec 7, 2006
- Asia Optical Co., Inc.
- Pie-Yau Chien
- G01 - MEASURING TESTING