Granted Patent
Utility
US 4,281,862 · App. 05/948,905
Tubing joint assembly
Inventor:
Ralph G. Ridenour
Patented Case
View Patent ↗
Granted: Aug 4, 1981
Filed: Oct 5, 1978
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.