Granted Patent
Utility
US 5,390,774 · App. 08/126,418
Electromagnetic clutch with improved guidance and retention
Inventors:
Michael G. Thurston, Paul A. Szalach
Patented Case
View Patent ↗
Granted: Feb 21, 1995
Filed: Sep 27, 1993
Inventors
Michael G. Thurston
Paul A. Szalach
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.