Granted Patent
Utility
US 5,136,987 · App. 07/720,074
Variable displacement and compression ratio piston engine
Inventors:
Michael M. Schechter, Aladar O. Simko, Michael Levin
Patented Case
View Patent ↗
Granted: Aug 11, 1992
Filed: Jun 24, 1991
Inventors
Michael M. Schechter
Aladar O. Simko
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.