Granted Patent
Utility
US 4,200,314 · App. 05/527,683
Tube fitting assembly
Inventor:
Ralph G. Ridenour
Patented Case
View Patent ↗
Granted: Apr 29, 1980
Filed: Nov 27, 1974
Inventor
Ralph G. Ridenour
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.