Granted Patent
Utility
US 5,533,474 · App. 08/372,788
Lubricating-oil device for an internal combustion engine
Inventors:
Ernst-Wilhelm Hufendiek, Walter Kerschbaum, Johannes Werner
Patented Case
View Patent ↗
Granted: Jul 9, 1996
Filed: Jan 13, 1995
Inventors
Ernst-Wilhelm Hufendiek
Walter Kerschbaum
Johannes Werner
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.