Granted Patent
Utility
US 6,182,970 · App. 09/178,618
Hollow golf ball
Inventors:
Kazuhisa Fushihara, Kiyoto Maruoka, Kazuo Hochi, Akihiro Nakahara
Patented Case
View Patent ↗
Granted: Feb 6, 2001
Filed: Oct 26, 1998
Inventors
Kazuhisa Fushihara
Kiyoto Maruoka
Kazuo Hochi
Akihiro Nakahara
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.