Granted Patent
Utility
US 6,257,119 · App. 09/390,128
Ball joint for servo piston actuation in a bent axis hydraulic unit
Inventors:
James D. Ryken, David D. Dirks, Doug Kardell, Wilhelm Gollner
Patented Case
View Patent ↗
Granted: Jul 10, 2001
Filed: Sep 3, 1999
Inventors
James D. Ryken
David D. Dirks
Doug Kardell
Wilhelm Gollner
Assignee (at issue)
SAUER-DANFOSS INC.
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.