Granted Patent
Utility
US 4,871,199 · App. 07/185,849
Double bead tube fitting
Inventors:
Ralph G. Ridenour, Thomas Stanton
Patented Case
View Patent ↗
Granted: Oct 3, 1989
Filed: Apr 25, 1988
Inventors
Ralph G. Ridenour
Thomas Stanton
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.