Granted Patent
Utility
US 6,220,972 · App. 09/335,302
Golf ball with multi-layer cover
Inventors:
Michael J. Sullivan, Mark L. Binette
Patented Case
View Patent ↗
Granted: Apr 24, 2001
Filed: Jun 17, 1999
Inventors
Michael J. Sullivan
Mark L. Binette
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.