Granted Patent
Utility
US 6,669,216 · App. 09/806,388
Hydropneumatic suspension system
Inventors:
Dieter Elser, Andreas Braun, Manfred Heintschel, Wolfgang Zeitz
Patented Case
View Patent ↗
Granted: Dec 30, 2003
Filed: Jul 2, 2001
Inventors
Dieter Elser
Andreas Braun
Manfred Heintschel
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.