Granted Patent
Utility
US 6,039,034 · App. 09/148,848
Exhaust gas recirculation valve
Inventors:
Martin J. Field, Bernd Jakob Ballmert, Laurence Alexander Collins, Robert J. Moran
Patented Case
View Patent ↗
Granted: Mar 21, 2000
Filed: Sep 4, 1998
Inventors
Martin J. Field
Bernd Jakob Ballmert
Laurence Alexander Collins
Robert J. Moran
Assignee (at issue)
General Motors 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.