Granted Patent
Utility
US 4,442,743 · App. 06/371,232
Punching machine
Inventor:
Elmer G. Szanto
Patented Case
View Patent ↗
Granted: Apr 17, 1984
Filed: Apr 23, 1982
Inventor
Elmer G. Szanto
Assignee (at issue)
VeloBind, Inc.
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.