Granted Patent
Utility
US 6,368,237 · App. 08/714,661
Multi-layer golf ball
Inventor:
Michael J. Sullivan
Patented Case
View Patent ↗
Granted: Apr 9, 2002
Filed: Sep 16, 1996
Inventor
Michael J. Sullivan
Assignee (at issue)
Spalding Sports Worldwide, Inc.
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.