Granted Patent
Utility
US 4,285,632 · App. 06/016,112
Oiling system for rotor bearings
Inventor:
Dennis W. DeSalve
Patented Case
View Patent ↗
Granted: Aug 25, 1981
Filed: Feb 28, 1979
Inventor
Dennis W. DeSalve
Assignee (at issue)
United Aircraft Products, 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.