Granted Patent
Utility
US 4,415,853 · App. 06/199,386
Monitoring device and method for accurately determining and recording present demand of electrical energy
Inventor:
Berish M. Fisher
Patented Case
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Granted: Nov 15, 1983
Filed: Oct 21, 1980
Inventor
Berish M. Fisher
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.