Granted Patent
Utility
US 6,533,681 · App. 09/852,678
Golf club head
Inventors:
Akihisa Inoue, Hisashi Kakiuchi, Yoshishige Takano
Patented Case
View Patent ↗
Granted: Mar 18, 2003
Filed: May 11, 2001
Inventors
Akihisa Inoue
Hisashi Kakiuchi
Yoshishige Takano
Assignees (at issue)
Akihisa Inoue
SUMITOMO RUBBER INDUSTRIES, LTD.
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.