Granted Patent
Utility
US 6,668,776 · App. 10/341,155
Deactivation roller hydraulic valve lifter
Inventors:
Nick J. Hendriksma, Mark J. Spath
Patented Case
View Patent ↗
Granted: Dec 30, 2003
Filed: Jan 13, 2003
Inventors
Nick J. Hendriksma
Mark J. Spath
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.