Osamu Kawamata

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Ibaraki, JP

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Patents Grantslast 30 patents

Information Patent Grant
Method of producing a strip having a non-uniform cross section by a...
- Patent number 4,578,979
- Issue date Apr 1, 1986
- Hitachi Cables, Ltd.
- Hajime Abe
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...