Granted Patent
Utility
US 6,131,687 · App. 08/640,901
Process for actuating the steering cylinders of mobile plant and steering system therefor
Inventors:
Gustav Leidinger, Walter Kolb
Patented Case
View Patent ↗
Granted: Oct 17, 2000
Filed: Jan 7, 1997
Inventors
Gustav Leidinger
Walter Kolb
Assignee (at issue)
O & K Orenstein and Koppel 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.