Granted Patent
Utility
US 5,160,293 · App. 07/757,635
Air guide box
Inventors:
Heinz Koukal, Richard Düsterhöft, Hans Trube
Patented Case
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Granted: Nov 3, 1992
Filed: Sep 11, 1991
Inventors
Heinz Koukal
Richard Düsterhöft
Hans Trube
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.