Granted Patent
Utility
US 4,642,956 · App. 06/813,450
Fire-retardant fluid coupling assembly and method
Inventor:
Gerold J. Harbeke
Patented Case
View Patent ↗
Granted: Feb 17, 1987
Filed: Dec 26, 1985
Inventor
Gerold J. Harbeke
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.