Granted Patent
Utility
US 6,631,707 · App. 09/959,678
Device for recirculating the exhaust gas of an internal combustion engine
Inventors:
Franz Bender, Jurgen Huter, Rudiger Pfaff, Joachim Wiltschka
Patented Case
View Patent ↗
Granted: Oct 14, 2003
Filed: Jan 28, 2002
Inventors
Franz Bender
Jurgen Huter
Rudiger Pfaff
Joachim Wiltschka
Assignee (at issue)
Daimlerchrysler AG
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.