Granted Patent
Utility
US 4,313,607 · App. 06/207,654
Reinforced metal shell golf club head, with keel
Inventor:
Stanley C. Thompson
Patented Case
View Patent ↗
Granted: Feb 2, 1982
Filed: Nov 17, 1980
Inventor
Stanley C. Thompson
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.