Granted Patent
Utility
US 4,719,793 · App. 06/938,791
Hardness testing apparatus
Inventor:
Jaime F. Pozo
Patented Case
View Patent ↗
Granted: Jan 19, 1988
Filed: Dec 8, 1986
Inventor
Jaime F. Pozo
Assignee (at issue)
AMSTED INDUSTRIES INCORPORATED
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.