Granted Patent
Utility
US 6,647,971 · App. 10/149,922
Integrated EGR valve and cooler
Inventors:
Richard J. Vaughan, Dimitri L. Vamvakitis, Jerry Holden, Jack Morais
Patented Case
View Patent ↗
Granted: Nov 18, 2003
Filed: Sep 6, 2002
Inventors
Richard J. Vaughan
Dimitri L. Vamvakitis
Jerry Holden
Jack Morais
Assignee (at issue)
Cooper Technology Services, 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.