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Katsuki Araki
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Yokohama-shi, JP
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Patents Grants
last 30 patents
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Patent Grant
Molding device for pulling open elongated holes in pipes or sheets
Patent number
9,073,111
Issue date
Jul 7, 2015
ARAKI TECHNICAL AND RESEARCH CO., LTD.
Katsuki Araki
B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Patents Applications
last 30 patents
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Patent Application
MOLDING DEVICE FOR PULLING OPEN ELONGATED HOLES IN PIPES OR SHEETS
Publication number
20140020443
Publication date
Jan 23, 2014
ARAKI TECHNICAL AND RESEARCH CO., LTD
Katsuki Araki
B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...