Granted Patent
Utility
US 4,302,036 · App. 06/066,988
Tube coupling
Inventor:
Donald G. Burge
Patented Case
View Patent ↗
Granted: Nov 24, 1981
Filed: Aug 16, 1979
Inventor
Donald G. Burge
Assignee (at issue)
Parker-Hannifin Corporation
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.