Granted Patent
Utility
US 3,964,692 · App. 05/548,669
Winch spool with disc brake system
Inventor:
Earl M. Pendleton
Patented Case
View Patent ↗
Granted: Jun 22, 1976
Filed: Feb 10, 1975
Inventor
Earl M. Pendleton
Assignee (at issue)
Mattco, 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.