Kian Yong Heng

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Patents Grantslast 30 patents

Information Patent Grant
Method for twisting hollow bars
- Patent number 8,782,898
- Issue date Jul 22, 2014
- Kian Yong Heng
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...

Patents Applicationslast 30 patents

Information Patent Application
METHOD FOR TWISTING HOLLOW BARS
- Publication number 20110293959
- Publication date Dec 1, 2011
- Kian Yong Heng
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...