Granted Patent
Utility
US 5,647,390 · App. 08/411,945
Thermal relief valve with improved bayonet
Inventor:
Lloyd G. Wass
Patented Case
View Patent ↗
Granted: Jul 15, 1997
Filed: Mar 28, 1995
Inventor
Lloyd G. Wass
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.