Chen-Nan Liao

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Hsin-Chuang City, Taipei Hsien, TW

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Patents Grantslast 30 patents

Information Patent Grant
Cutting tool assembly in coil spring winding machines
- Patent number 6,178,862
- Issue date Jan 30, 2001
- Chen-Nan Liao
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Versatile spring making machine
- Patent number 5,660,067
- Issue date Aug 26, 1997
- Chen-Nan Liao
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...