Yen-Shun Chu

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Miao-Li Hsien, TW

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Patents Grantslast 30 patents

Information Patent Grant
Wheel spoke extrusion stretcher
- Patent number 5,740,689
- Issue date Apr 21, 1998
- Yen-Shun Chu
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...