Granted Patent
Utility
US 6,497,207 · App. 09/840,375
Deactivation roller hydraulic valve lifter
Inventors:
Mark J. Spath, Albert C. Stone, Carl R. Kangas, David McCarthy
Patented Case
View Patent ↗
Granted: Dec 24, 2002
Filed: Apr 23, 2001
Inventors
Mark J. Spath
Albert C. Stone
Carl R. Kangas
David McCarthy
Assignee (at issue)
Delphi Technologies
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.