Granted Patent
Utility
US 5,072,187 · App. 07/548,627
Method and apparatus for determining the total harmonic distortion and power factor of a non-linear load circuit
Inventor:
Marcel Shilo
Patented Case
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Granted: Dec 10, 1991
Filed: Jun 29, 1990
Inventor
Marcel Shilo
Assignee (at issue)
Digital Equipment 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.