Granted Patent
Utility
US 4,877,252 · App. 07/260,069
Golf balls
Inventor:
Michael Shaw
Patented Case
View Patent ↗
Granted: Oct 31, 1989
Filed: Oct 20, 1988
Inventor
Michael Shaw
Assignee (at issue)
Dunlop Limited, A British Company
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.