Granted Patent
Utility
US 6,584,942 · App. 10/157,652
Cylinder deactivation apparatus with vapor purge
Inventors:
William C. Albertson, Frederick J. Rozario, Vimesh M. Patel, Carlos Ponce
Patented Case
View Patent ↗
Granted: Jul 1, 2003
Filed: May 29, 2002
Inventors
William C. Albertson
Frederick J. Rozario
Vimesh M. Patel
Carlos Ponce
Assignee (at issue)
General Motors LLC
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.