Granted Patent
Utility
US 5,667,653 · App. 08/616,689
Electrochemical sensor
Inventors:
Alan A. Schneider, Towner Bennett Scheffler, Brian Keith Davis
Patented Case
View Patent ↗
Granted: Sep 16, 1997
Filed: Mar 15, 1996
Inventors
Alan A. Schneider
Towner Bennett Scheffler
Brian Keith Davis
Assignee (at issue)
Mine Safety Appliances Company, LLC
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.