Granted Patent
Utility
US 4,407,516 · App. 06/449,353
Pressure energized sealing connection with annular seal ring
Inventors:
Tri C. Le, Bruce P. Noble
Patented Case
View Patent ↗
Granted: Oct 4, 1983
Filed: Dec 13, 1982
Inventors
Tri C. Le
Bruce P. Noble
Assignee (at issue)
ACF Industries Incorporated
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.