Granted Patent
Utility
US 6,722,351 · App. 10/286,158
EGR valve apparatus
Inventors:
Dimitri L. Vamvakitis, Richard J. Vaughan, Jerry Holden
Patented Case
View Patent ↗
Granted: Apr 20, 2004
Filed: Oct 30, 2002
Inventors
Dimitri L. Vamvakitis
Richard J. Vaughan
Jerry Holden
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.