Granted Patent
Utility
US 6,439,176 · App. 09/799,301
Control system for deactivation of valves in an internal combustion engine
Inventors:
Natalie G. Payne, David McCarthy, Tammy Stewart (Petronis)
Patented Case
View Patent ↗
Granted: Aug 27, 2002
Filed: Mar 5, 2001
Inventors
Natalie G. Payne
David McCarthy
Tammy Stewart (Petronis)
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.