Granted Patent
Utility
US 4,187,938 · App. 05/855,114
Electromagnetic clutch with anti-jam cam actuation
Inventor:
Donald L. Miller
Patented Case
View Patent ↗
Granted: Feb 12, 1980
Filed: Nov 28, 1977
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.