Granted Patent
Utility
US 4,359,094 · App. 06/214,726
Shear relief valve
Inventor:
Ronald L. Risinger
Patented Case
View Patent ↗
Granted: Nov 16, 1982
Filed: Dec 9, 1980
Inventor
Ronald L. Risinger
Assignee (at issue)
Otis Engineering 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.