Granted Patent
Utility
US 6,298,838 · App. 09/552,390
Ethanol content learning based on engine roughness
Inventors:
Shean Huff, John M. Prevost
Patented Case
View Patent ↗
Granted: Oct 9, 2001
Filed: Apr 19, 2000
Inventors
Shean Huff
John M. Prevost
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.