Akinobu Yamada

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Patents Grantslast 30 patents

Information Patent Grant
Flaw treatment method and apparatus for a wire-shaped metal
- Patent number 5,628,218
- Issue date May 13, 1997
- Nippon Koshuha Steel Co., Ltd.
- Akinobu Yamada
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...