Granted Patent
Utility
US 4,173,155 · App. 05/833,776
Variable diameter torque sensing drive
Inventors:
Paul G. Togami, T. Gary Drayer, James M. Francis
Patented Case
View Patent ↗
Granted: Nov 6, 1979
Filed: Sep 16, 1977
Inventors
Paul G. Togami
T. Gary Drayer
James M. Francis
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.