Yasukichi Egami

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Nogi, JP

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Patents Grantslast 30 patents

Information Patent Grant
Mechanical element having a shaft pressure-fitted into an engaging...
- Patent number 5,272,930
- Issue date Dec 28, 1993
- Nippon Piston Ring Co., Ltd.
- Yoshikatsu Nakamura
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...