Granted Patent
Utility
US 4,355,990 · App. 06/189,493
Torsionally elastic power transmitting device
Inventor:
Jock S. Duncan, Jr.
Patented Case
View Patent ↗
Granted: Oct 26, 1982
Filed: Sep 22, 1980
Inventor
Jock S. Duncan, Jr.
Assignee (at issue)
The Gates Rubber 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.