Granted Patent
Utility
US 6,640,163 · App. 10/260,893
Operating system for a programmable controller of a hydraulic system
Inventors:
Joseph L. Pfaff, Robert Willard
Patented Case
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Granted: Oct 28, 2003
Filed: Sep 30, 2002
Inventors
Joseph L. Pfaff
Robert Willard
Assignee (at issue)
HUSCO International, 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.