Granted Patent
Utility
US 4,840,913 · App. 07/196,813
Oxides of nitrogen detector
Inventors:
Eleftherios M. Logothetis, Richard E. Soltis
Patented Case
View Patent ↗
Granted: Jun 20, 1989
Filed: May 19, 1988
Inventors
Eleftherios M. Logothetis
Richard E. Soltis
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.