Granted Patent
Utility
US 6,220,031 · App. 09/384,290
Exhaust gas turbocharger for an internal-combustion engine and method of operating same
Inventors:
Helmut Daudel, Siegfried Sumser
Patented Case
View Patent ↗
Granted: Apr 24, 2001
Filed: Aug 26, 1999
Inventors
Helmut Daudel
Siegfried Sumser
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.