Granted Patent
Utility
US 5,224,447 · App. 07/974,736
Air guide housing for a fan impeller of an internal combustion engine
Inventors:
Andreas Braatz, Martin Konermann
Patented Case
View Patent ↗
Granted: Jul 6, 1993
Filed: Nov 13, 1992
Inventors
Andreas Braatz
Martin Konermann
Assignee (at issue)
MERCEDES-BENZ GROUP 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.