Yusuke Minami

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Method for producing a seamless steel tubular product
- Patent number 5,816,087
- Issue date Oct 6, 1998
- NKK Corporation
- Tatsuro Katsumura
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...