Granted Patent
Utility
US 4,206,583 · App. 05/939,002
Cutterbar floatation system
Inventors:
Robert D. Week, Orlin W. Johnson, Dathan R. Kerber
Patented Case
View Patent ↗
Granted: Jun 10, 1980
Filed: Sep 1, 1978
Inventors
Robert D. Week
Orlin W. Johnson
Dathan R. Kerber
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.