Granted Patent
Utility
US 4,604,182 · App. 06/696,196
Perfluorosulfonic acid polymer-coated indicator electrodes
Inventor:
James L. Seago
Patented Case
View Patent ↗
Granted: Aug 5, 1986
Filed: Jan 29, 1985
Inventor
James L. Seago
Assignee (at issue)
E.I. DU PONT DE NEMOURS AND COMPANY
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.