Granted Patent
Utility
US 4,360,063 · App. 06/212,995
Valve
Inventor:
Marion D. Kilgore
Patented Case
View Patent ↗
Granted: Nov 23, 1982
Filed: Dec 4, 1980
Inventor
Marion D. Kilgore
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.