Granted Patent
Utility
US 4,622,638 · App. 06/564,442
Ionization probe output interface circuit
Inventors:
Robert L. Anderson, William R. McDonald
Patented Case
View Patent ↗
Granted: Nov 11, 1986
Filed: Dec 22, 1983
Inventors
Robert L. Anderson
William R. McDonald
Assignee (at issue)
Ford Motor 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.