Granted Patent
Utility
US 4,464,604 · App. 06/397,706
Tractor work lighting with automatic deluminizing control
Inventors:
Thomas P. Hillstrom, Robert J. Wilson, John T. Corwith
Patented Case
View Patent ↗
Granted: Aug 7, 1984
Filed: Jul 13, 1982
Inventors
Thomas P. Hillstrom
Robert J. Wilson
John T. Corwith
Assignee (at issue)
International Harvester Company
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.