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Akira Uemura
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Nakamachi, JP
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last 30 patents
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Patent Grant
Steel pipe rolling mill
Patent number
4,449,386
Issue date
May 22, 1984
Nippon Kokan Kabushiki Kaisha
Shinji Akita
B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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Patent Grant
Steel pipe rolling mill
Patent number
4,444,035
Issue date
Apr 24, 1984
Nippon Kokan Kabushiki Kaisha
Shinji Akita
B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...