Granted Patent
Utility
US 6,478,036 · App. 09/343,139
Method and apparatus for cleaning exhaust gas recirculation system
Inventors:
David L. Connors, Daniel P. Degnan, Harold E. Erwin
Patented Case
View Patent ↗
Granted: Nov 12, 2002
Filed: Jun 29, 1999
Inventors
David L. Connors
Daniel P. Degnan
Harold E. Erwin
Assignee (at issue)
BG PRODUCTS, INC.
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.