Granted Patent
Utility
US 5,785,605 · App. 08/548,816
Hollow, metallic golf club head with configured medial ridge
Inventor:
Richard C. Helmstetter
Patented Case
View Patent ↗
Granted: Jul 28, 1998
Filed: Jan 11, 1996
Inventor
Richard C. Helmstetter
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.