Granted Patent
Utility
US 4,388,987 · App. 06/240,040
Hydromechanical transmission employing lockup clutch
Inventors:
Richard G. Hennessey, Richard B. Beemer, Harold W. Melles
Patented Case
View Patent ↗
Granted: Jun 21, 1983
Filed: Mar 3, 1981
Inventors
Richard G. Hennessey
Richard B. Beemer
Harold W. Melles
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.