Granted Patent
Utility
US 6,589,124 · App. 09/181,814
Hollow golf ball
Inventors:
Kiyoto Maruoka, Akihiro Nakahara, Kazuo Hochi
Patented Case
View Patent ↗
Granted: Jul 8, 2003
Filed: Oct 29, 1998
Inventors
Kiyoto Maruoka
Akihiro Nakahara
Kazuo Hochi
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.