Granted Patent
Utility
US 6,074,309 · App. 09/175,937
Laminated lightweight inserts for golf club heads
Inventor:
Steven J. Mahaffey
Patented Case
View Patent ↗
Granted: Jun 13, 2000
Filed: Oct 21, 1998
Inventor
Steven J. Mahaffey
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.