Granted Patent
Utility
US 4,327,533 · App. 06/177,789
Crane boom extending, retracting and cooperative latching arrangement
Inventor:
Russell L. Sterner
Patented Case
View Patent ↗
Granted: May 4, 1982
Filed: Aug 13, 1980
Inventor
Russell L. Sterner
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.