Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Akio Yamamoto0
Date of Patent
June 27, 2006
0Patent Application Number
103727860
Date Filed
February 26, 2003
0Patent Citations Received
Patent Primary Examiner
Patent abstract
A golf club head comprises a face portion having a front face defining a clubface for hitting a ball and a back face facing a hollow, wherein the clubface is provided along the edge thereof with a frontal groove having a groove width of not less than 0.5 mm, and the back face is provided with a backside groove extending along the frontal groove.
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