Granted Patent
Utility
US 4,515,258 · App. 06/473,425
Clutch drive with link spring
Inventor:
Duane R. Johnson
Patented Case
View Patent ↗
Granted: May 7, 1985
Filed: Mar 9, 1983
Inventor
Duane R. Johnson
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.