Granted Patent
Utility
US 6,173,568 · App. 09/154,487
Method and device for operating an internal combustion engine operating with an excess of air
Inventors:
Jurgen Zurbig, Rainer Tost, Winfried Dolling, Reinhard Latsch
Patented Case
View Patent ↗
Granted: Jan 16, 2001
Filed: Sep 16, 1998
Inventors
Jurgen Zurbig
Rainer Tost
Winfried Dolling
Reinhard Latsch
Assignee (at issue)
Siemens Aktiengesellschaft
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.