Granted Patent
Utility
US 4,269,341 · App. 06/091,336
Stationery burster
Inventor:
Peter R. Polko
Patented Case
View Patent ↗
Granted: May 26, 1981
Filed: Nov 5, 1979
Inventor
Peter R. Polko
Assignee (at issue)
Uarco 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.