Granted Patent
Utility
US 4,788,021 · App. 07/105,656
Method for fabricating a sawtooth clamp cushion
Inventor:
John Griffiths
Patented Case
View Patent ↗
Granted: Nov 29, 1988
Filed: Oct 6, 1987
Inventor
John Griffiths
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.