Granted Patent
Utility
US 4,198,280 · App. 05/970,891
Membrane support structure for electrochemical sensing probe
Inventor:
Dorian J. Swartz
Patented Case
View Patent ↗
Granted: Apr 15, 1980
Filed: Dec 19, 1978
Inventor
Dorian J. Swartz
Assignee (at issue)
American Hospital Supply Corp.
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.