Granted Patent
Utility
US 6,594,993 · App. 09/715,610
Hydraulic driving device and system for a vehicle
Inventors:
Welm Friedrichsen, Uffe Eriksen
Patented Case
View Patent ↗
Granted: Jul 22, 2003
Filed: Nov 17, 2000
Inventors
Welm Friedrichsen
Uffe Eriksen
Assignee (at issue)
DANFOSS A/S
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.