Granted Patent
Utility
US 4,650,163 · App. 06/782,018
Hydraulic winch
Inventor:
Robert L. Peterson
Patented Case
View Patent ↗
Granted: Mar 17, 1987
Filed: Sep 30, 1985
Inventor
Robert L. Peterson
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.