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Koichi Yokoi
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Maebashi, JP
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last 30 patents
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Patent Grant
Method of manufacturing a hollow steering shaft and hollow steering...
Patent number
5,511,440
Issue date
Apr 30, 1996
NSK Ltd.
Yasushi Watanabe
B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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Patent Grant
Yoke for universal joint and manufacturing method therefor
Patent number
5,018,899
Issue date
May 28, 1991
Nippon Seiko Kabushiki Kaisha
Ritsuo Kuribara
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...