Granted Patent
Utility
US 4,431,425 · App. 06/258,362
Flow fault sensing system
Inventors:
Thomas C. Thompson, Martyn Stuart Abbott, Robert L. Easley
Patented Case
View Patent ↗
Granted: Feb 14, 1984
Filed: Apr 28, 1981
Inventors
Thomas C. Thompson
Martyn Stuart Abbott
Robert L. Easley
Assignee (at issue)
Quest Medical, 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.