Granted Patent
Utility
US 6,685,579 · App. 09/853,252
Multi-layer cover polyurethane golf ball
Inventor:
Michael J. Sullivan
Patented Case
View Patent ↗
Granted: Feb 3, 2004
Filed: Apr 10, 2001
Inventor
Michael J. Sullivan
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.