Guo Jen Huang

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Nantou Hsien, TW

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Patents Applicationslast 30 patents

Information Patent Application
Mold assembly for forming annular bulges on tube
- Publication number 20040187541
- Publication date Sep 30, 2004
- Guo Jen Huang
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...