Granted Patent
Utility
US 6,474,437 · App. 09/720,763
Power-assisted steering with hydraulic power assistance
Inventors:
Dieter Elser, Andreas Braun, Wolfgang Zeitz
Patented Case
View Patent ↗
Granted: Nov 5, 2002
Filed: Mar 5, 2001
Inventors
Dieter Elser
Andreas Braun
Wolfgang Zeitz
Assignee (at issue)
ZF Lenksysteme GmbH
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.