Granted Patent
Utility
US 5,275,136 · App. 08/057,904
Variable engine valve control system with hydraulic damper
Inventors:
Michael M. Schechter, Michael Levin
Patented Case
View Patent ↗
Granted: Jan 4, 1994
Filed: May 7, 1993
Inventors
Michael M. Schechter
Michael Levin
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.