Granted Patent
Utility
US 4,281,749 · App. 06/027,347
Automatic locking clutch
Inventor:
Mark J. Fogelberg
Patented Case
View Patent ↗
Granted: Aug 4, 1981
Filed: Apr 5, 1979
Inventor
Mark J. Fogelberg
Assignee (at issue)
BorgWarner Inc.
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.