Granted Patent
Utility
US 5,152,190 · App. 07/620,022
Toothed-wheel change gear pump for conveyance and a gearbox for transmission oil intermediate storage
Inventors:
Gunter Jurgens, Jurgen Pickard, Walter Robmann
Patented Case
View Patent ↗
Granted: Oct 6, 1992
Filed: Nov 30, 1990
Inventors
Gunter Jurgens
Jurgen Pickard
Walter Robmann
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.