Hiroyuki Tominaga

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Niihama, JP

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Patents Grantslast 30 patents

Information Patent Grant
Pickling method of metal plate
- Patent number 5,863,347
- Issue date Jan 26, 1999
- Sumitomo Heavy Industries, Ltd.
- Keizo Abe
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...