Granted Patent
Utility
US 4,566,534 · App. 06/697,544
Solenoid actuated well safety valve
Inventor:
Walter S. Going, III
Patented Case
View Patent ↗
Granted: Jan 28, 1986
Filed: Feb 1, 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.