Granted Patent
Utility
US 6,334,820 · App. 09/457,362
Solid golf ball
Inventor:
Takashi Sasaki
Patented Case
View Patent ↗
Granted: Jan 1, 2002
Filed: Dec 9, 1999
Inventor
Takashi Sasaki
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.