Fumio Yamamoto

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Miyada-mura, JP

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Patents Applicationslast 30 patents

Information Patent Application
COIL SPRING, AND METHOD FOR MANUFACTURING SAME
- Publication number 20160160306
- Publication date Jun 9, 2016
- NHK Spring Co., Ltd.
- Fumio YAMAMOTO
- C21 - METALLURGY OF IRON
Information Patent Application
Oil tempered steel wire excellent in coiling workability and method...
- Publication number 20060088710
- Publication date Apr 27, 2006
- Tadayoshi Fujiwara
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...