Granted Patent
Utility
US 4,344,564 · App. 06/237,543
Thermal by-pass valve with integral pressure relief
Inventor:
Ruel D. Magnuson
Patented Case
View Patent ↗
Granted: Aug 17, 1982
Filed: Feb 23, 1981
Inventor
Ruel D. Magnuson
Assignee (at issue)
Gould Inc.
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.