Granted Patent
Utility
US 4,773,276 · App. 07/021,690
Normal force measuring gauge
Inventor:
Bernard A. Baruffalo
Patented Case
View Patent ↗
Granted: Sep 27, 1988
Filed: Mar 4, 1987
Inventor
Bernard A. Baruffalo
Assignee (at issue)
E.I. DU PONT DE NEMOURS AND 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.