Granted Patent
Utility
US 5,235,939 · App. 07/971,656
Automotive engine torsional pulse enhancer
Inventors:
Michael Levin, Julian A. LoRusso, Peter Szpak
Patented Case
View Patent ↗
Granted: Aug 17, 1993
Filed: Nov 5, 1992
Inventors
Michael Levin
Julian A. LoRusso
Peter Szpak
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.