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Kazuhiro Tsuchiya
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Hamamatsu, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Golf club head
Patent number
6,106,412
Issue date
Aug 22, 2000
Yamaha Corporation
Katsuhiko Kosugi
B22 - CASTING POWDER METALLURGY
Information
Patent Grant
Golf club head and a method for producing the same
Patent number
5,378,295
Issue date
Jan 3, 1995
Yamaha Corporation
Hiroyuki Yamashita
C21 - METALLURGY OF IRON
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Patent Grant
Hollow metal alloy wood-type golf head
Patent number
5,346,217
Issue date
Sep 13, 1994
Yamaha Corporation
Kazuhiro Tsuchiya
A63 - SPORTS GAMES AMUSEMENTS