Granted Patent
Utility
US 4,779,839 · App. 06/935,963
System for actuating an electrical valve from a remote location
Inventor:
Lawrence M. Sears
Patented Case
View Patent ↗
Granted: Oct 25, 1988
Filed: Nov 28, 1986
Inventor
Lawrence M. Sears
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.