Granted Patent
Utility
US 6,623,377 · App. 10/063,927
Golf club striking plate with variable thickness
Inventors:
D. Clayton Evans, J. Andrew Galloway
Patented Case
View Patent ↗
Granted: Sep 23, 2003
Filed: May 24, 2002
Inventors
D. Clayton Evans
J. Andrew Galloway
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.