Granted Patent
Utility
US 4,649,993 · App. 06/776,065
Combination electrically operated solenoid safety valve and measuring sensor
Inventor:
Walter S. Going, III
Patented Case
View Patent ↗
Granted: Mar 17, 1987
Filed: Sep 18, 1985
Inventor
Walter S. Going, III
Assignee (at issue)
Camco 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.