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Shohju Ishii
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Tokyo, JP
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last 30 patents
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Patent Grant
Process of closed extrusion shaping of a metal rod material and an...
Patent number
4,287,747
Issue date
Sep 8, 1981
Nissan Motor Co., Ltd.
Hajime Koshimaru
B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...