Granted Patent
Utility
US 4,635,805 · App. 06/318,591
Crane boom locking pin insertion indicator and actuator means
Inventor:
William R. Mentzer
Patented Case
View Patent ↗
Granted: Jan 13, 1987
Filed: Nov 5, 1981
Inventor
William R. Mentzer
Assignee (at issue)
Kidde Holding, 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.