Granted Patent
Utility
US 4,266,457 · App. 06/093,843
Cope cutter
Inventors:
Robert Balch, Charles E. Kerr
Patented Case
View Patent ↗
Granted: May 12, 1981
Filed: Nov 13, 1979
Inventors
Robert Balch
Charles E. Kerr
Assignee (at issue)
Robert A. Balch
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.