Granted Patent
Utility
US 4,327,821 · App. 06/164,221
Automatic locking clutch with sliding clutch ring
Inventor:
Thomas M. Telford
Patented Case
View Patent ↗
Granted: May 4, 1982
Filed: Jun 30, 1980
Inventor
Thomas M. Telford
Assignee (at issue)
Warn Industries, 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.