Granted Patent
Utility
US 4,719,806 · App. 06/831,501
Fluid flow rate monitor probe
Inventors:
Joseph G. Craigen, Bryan F. Dixon
Patented Case
View Patent ↗
Granted: Jan 19, 1988
Filed: Feb 21, 1986
Inventors
Joseph G. Craigen
Bryan F. Dixon
Assignee (at issue)
British Gas
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.