Granted Patent
Utility
US 6,478,950 · App. 09/647,523
Sensing liquids in oil well using electrochemical sensor
Inventors:
Robert Peat, Paul Fennell
Patented Case
View Patent ↗
Granted: Nov 12, 2002
Filed: Oct 2, 2000
Inventors
Robert Peat
Paul Fennell
Assignee (at issue)
Accentus plc
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.