Granted Patent
Utility
US 4,270,970 · App. 06/149,984
Punching and binding machine
Inventors:
Elmer G. Szanto, Charles J. Ulrich
Patented Case
View Patent ↗
Granted: Jun 2, 1981
Filed: May 15, 1980
Inventors
Elmer G. Szanto
Charles J. Ulrich
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.