Granted Patent
Utility
US 5,497,869 · App. 08/301,088
Electromagnetic clutch with improved engagement
Inventors:
Hugh James Muirhead, Richard L. Marker
Patented Case
View Patent ↗
Granted: Mar 12, 1996
Filed: Sep 6, 1994
Inventors
Hugh James Muirhead
Richard L. Marker
Assignee (at issue)
General Motors LLC
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.