Granted Patent
Utility
US 4,363,576 · App. 06/249,025
Slotting cutter
Inventor:
Raymond T. Zweekly
Patented Case
View Patent ↗
Granted: Dec 14, 1982
Filed: Mar 30, 1981
Inventor
Raymond T. Zweekly
Assignee (at issue)
The Valeron Corporation
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.