Granted Patent
Utility
US 5,949,221 · App. 09/082,572
Line powered, primary side connected apparatus injecting voltage compensation into an electric power line using one transformer
Inventor:
Charles Edwards
Patented Case
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Granted: Sep 7, 1999
Filed: May 21, 1998
Inventor
Charles Edwards
Assignee (at issue)
Siemens Westinghouse Power 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.