Granted Patent
Utility
US 4,367,992 · App. 06/175,975
Broaching machine
Inventor:
Daniel P. Soroka
Patented Case
View Patent ↗
Granted: Jan 11, 1983
Filed: Aug 7, 1980
Inventor
Daniel P. Soroka
Assignee (at issue)
Westinghouse Electric Company LLC
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.