Granted Patent
Utility
US 4,574,669 · App. 06/610,482
Automatic punch
Inventors:
Alfredo J. Vercillo, Roger M. Scharer
Patented Case
View Patent ↗
Granted: Mar 11, 1986
Filed: May 15, 1984
Inventors
Alfredo J. Vercillo
Roger M. Scharer
Assignee (at issue)
General Binding Corporation
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.