Granted Patent
Utility
US 4,541,516 · App. 06/473,427
Clutch drive with antirotation spring
Inventor:
David T. Fenzel
Patented Case
View Patent ↗
Granted: Sep 17, 1985
Filed: Mar 9, 1983
Inventor
David T. Fenzel
Assignee (at issue)
ALLIED CONSULTING, 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.