Granted Patent
Utility
US 5,163,350 · App. 07/685,351
Paper sheets punching apparatus
Inventors:
Charles T. Groswith, III, Richard D. Phipps, Robert L. Lathrop, Jr., John F. Stewart, Rick J. Kaufmann
Patented Case
View Patent ↗
Granted: Nov 17, 1992
Filed: Apr 15, 1991
Inventors
Charles T. Groswith, III
Richard D. Phipps
Robert L. Lathrop, Jr.
John F. Stewart
Rick J. Kaufmann
Assignee (at issue)
Taurus Tetraconcepts, 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.