Ken-ichi Yoshimoto

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Hitachi, JP

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Patents Grantslast 30 patents

Information Patent Grant
System and method for manufacturing thin plate by hot working
- Patent number 5,632,177
- Issue date May 27, 1997
- Hitachi, Ltd.
- Kenjiro Narita
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...