Granted Patent
Utility
US 5,547,426 · App. 08/574,320
Progressive golf club having a diagonally balanced slot back
Inventor:
Donald C. Wood
Patented Case
View Patent ↗
Granted: Aug 20, 1996
Filed: Dec 18, 1995
Inventor
Donald C. Wood
Assignee (at issue)
Plop 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.