Kazuya Tsubota

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Okayama, JP

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Patents Grantslast 30 patents

Information Patent Grant
Method for rolling metal plate
- Patent number 4,238,946
- Issue date Dec 16, 1980
- Kawasaki Steel Corporation
- Kazuya Tsubota
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...