Granted Patent
Utility
US 5,197,671 · App. 07/811,461
Pressure relief valve with thermal trigger and movable seal plug
Inventors:
Lloyd G. Wass, Michael R. Baird
Patented Case
View Patent ↗
Granted: Mar 30, 1993
Filed: Dec 19, 1991
Inventors
Lloyd G. Wass
Michael R. Baird
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.