Granted Patent
Utility
US 4,337,647 · App. 06/101,396
Engine roughness sensor
Inventors:
Charles R. Radcliffe, James A. Davis
Patented Case
View Patent ↗
Granted: Jul 6, 1982
Filed: Dec 7, 1979
Inventors
Charles R. Radcliffe
James A. Davis
Assignee (at issue)
Bendix Limited
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.