Toyohiko Okamoto

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Toyonaka, JP

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Patents Grantslast 30 patents

Information Patent Grant
Rolling mill
- Patent number 4,116,028
- Issue date Sep 26, 1978
- Sumitomo Metal Industries, Ltd.
- Toyohiko Okamoto
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...