Chih-An Ku

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Hsinchu City, TW

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Patents Grantslast 30 patents

Information Patent Grant
Cleaning cylinder apparatus
- Patent number 8,950,032
- Issue date Feb 10, 2015
- Tung An Development Ltd.
- Tung-Chung Cheng
- B08 - CLEANING

Patents Applicationslast 30 patents

Information Patent Application
Cleaning Cylinder Apparatus
- Publication number 20120096660
- Publication date Apr 26, 2012
- TUNG AN DEVELOPMENT LTD.
- Tung-Chung Cheng
- B08 - CLEANING
Information Patent Application
Cleaning Apparatus for Sophisticated Electric Device
- Publication number 20100212100
- Publication date Aug 26, 2010
- TUNG AN DEVELOPMENT LTD.
- Chih-An Ku
- B08 - CLEANING