Granted Patent
Utility
US 4,596,090 · App. 06/605,463
Spigot grinder and groover
Inventor:
William P. Gundy
Patented Case
View Patent ↗
Granted: Jun 24, 1986
Filed: Apr 30, 1984
Inventor
William P. Gundy
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.