Granted Patent
Utility
US 6,533,677 · App. 09/369,312
Golf club shaft
Inventors:
Norio Sumitomo, Masahide Onuki
Patented Case
View Patent ↗
Granted: Mar 18, 2003
Filed: Aug 6, 1999
Inventors
Norio Sumitomo
Masahide Onuki
Assignee (at issue)
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.