Granted Patent
Utility
US 4,416,359 · App. 06/246,538
Electromagnetic cone clutch with ball torque booster
Inventor:
Donald L. Miller
Patented Case
View Patent ↗
Granted: Nov 22, 1983
Filed: Mar 23, 1981
Inventor
Donald L. Miller
Assignee (at issue)
Facet Enterprises, Incorporated
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.