Granted Patent
Utility
US 6,163,471 · App. 09/509,083
Damping of an oscillation in a plant for transmission of high voltage direct current
Inventor:
Paolo Fischer De Toledo
Patented Case
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Granted: Dec 19, 2000
Filed: Jun 7, 2000
Inventor
Paolo Fischer De Toledo
Assignee (at issue)
ABB AB
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.