Chang-Yu Hsu

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Magong City, TW

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Patents Applicationslast 30 patents

Information Patent Application
Method for Forming an U-shaped Metal Frame
- Publication number 20110107805
- Publication date May 12, 2011
- Metal Industries Research & Development Centre
- Cheng-Hsin Lee
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...