Granted Patent
Utility
US 6,456,908 · App. 09/704,213
Traction motor speed sensor failure detection for an AC locomotive
Inventor:
Ajith Kuttannair Kumar
Patented Case
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Granted: Sep 24, 2002
Filed: Oct 26, 2000
Inventor
Ajith Kuttannair Kumar
Assignee (at issue)
General Electric Company
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.