Granted Patent
Utility
US 4,248,249 · App. 06/054,353
Combine rotor drive anti-trash system
Inventors:
Neil C. Dunn, Robert L. Francis, Harold E. Smith
Patented Case
View Patent ↗
Granted: Feb 3, 1981
Filed: Jul 2, 1979
Inventors
Neil C. Dunn
Robert L. Francis
Harold E. Smith
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.