Granted Patent
Utility
US 4,625,808 · App. 06/673,708
Device for coupling fire extinguishers to closed-off compartments
Inventor:
Paul F. Halfpenny
Patented Case
View Patent ↗
Granted: Dec 2, 1986
Filed: Nov 21, 1984
Inventor
Paul F. Halfpenny
Assignee (at issue)
Lockheed 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.