Granted Patent
Utility
US 4,745,835 · App. 06/302,571
Fine tooth perforation for webs
Inventor:
David H. Schnitzer
Patented Case
View Patent ↗
Granted: May 24, 1988
Filed: Sep 15, 1981
Inventor
David H. Schnitzer
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.