Granted Patent
Utility
US 6,007,432 · App. 09/120,433
Contoured golf club face
Inventor:
John B. Kosmatka
Patented Case
View Patent ↗
Granted: Dec 28, 1999
Filed: Jul 22, 1998
Inventor
John B. Kosmatka
Assignee (at issue)
Callaway Golf 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.