Granted Patent
Utility
US 6,826,909 · App. 10/290,706
Hydraulic gerotor motor with integral shuttle valve
Inventor:
James L. Walls
Patented Case
View Patent ↗
Granted: Dec 7, 2004
Filed: Nov 8, 2002
Inventor
James L. Walls
Assignee (at issue)
Parker-Hannifin Corporation
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.