Granted Patent
Utility
US 4,944,861 · App. 07/332,052
Oxygen sensing probe having improved sensor tip and tip-supporting tube
Inventor:
Eric J. Reber
Patented Case
View Patent ↗
Granted: Jul 31, 1990
Filed: Apr 3, 1989
Inventor
Eric J. Reber
Assignee (at issue)
Barber-Coleman 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.