Granted Patent
Utility
US 6,121,357 · App. 09/080,299
Solid golf ball
Inventor:
Masatoshi Yokota
Patented Case
View Patent ↗
Granted: Sep 19, 2000
Filed: May 18, 1998
Inventor
Masatoshi Yokota
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.