Granted Patent
Utility
US 5,018,740 · App. 07/537,836
Golf ball core
Inventor:
Michael J. Sullivan
Patented Case
View Patent ↗
Granted: May 28, 1991
Filed: Jun 13, 1990
Inventor
Michael J. Sullivan
Assignee (at issue)
Spalding & Evenflo Companies, 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.