Granted Patent
Utility
US 6,520,872 · App. 09/983,630
Three-piece solid golf ball
Inventors:
Seiichiro Endo, Keiji Ohama
Patented Case
View Patent ↗
Granted: Feb 18, 2003
Filed: Oct 25, 2001
Inventors
Seiichiro Endo
Keiji Ohama
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.