Granted Patent
Utility
US 6,688,991 · App. 10/282,713
Golf ball with foam core and filled cover
Inventors:
Michael J. Sullivan, Derek A. Ladd
Patented Case
View Patent ↗
Granted: Feb 10, 2004
Filed: Oct 29, 2002
Inventors
Michael J. Sullivan
Derek A. Ladd
Assignee (at issue)
Acushnet 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.