Granted Patent
Utility
US 6,401,856 · App. 09/424,690
Method and device for the power shiftable change-over of a hydrostatic vehicle drive of a mobile construction machine
Inventor:
Horst Kohlmorgen
Patented Case
View Patent ↗
Granted: Jun 11, 2002
Filed: Nov 29, 1999
Inventor
Horst Kohlmorgen
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.