Granted Patent
Utility
US 6,499,458 · App. 09/646,452
Method for operating a four-stroke reciprocating internal combustion engine
Inventor:
Rolf-Gunther Nieberding
Patented Case
View Patent ↗
Granted: Dec 31, 2002
Filed: Feb 26, 2001
Inventor
Rolf-Gunther Nieberding
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.