Granted Patent
Utility
US 4,236,595 · App. 06/067,396
Auxiliary drive system
Inventors:
Richard A. Beck, Glen T. Presley
Patented Case
View Patent ↗
Granted: Dec 2, 1980
Filed: Aug 17, 1979
Inventors
Richard A. Beck
Glen T. Presley
Assignee (at issue)
Parno 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.