Granted Patent
Utility
US 4,458,797 · App. 06/380,512
Control for rotating clutch
Inventor:
Cyril M. Hawkins
Patented Case
View Patent ↗
Granted: Jul 10, 1984
Filed: May 21, 1982
Inventor
Cyril M. Hawkins
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.