Granted Patent
Utility
US 4,500,837 · App. 06/225,226
Detection of DC content in an AC waveform
Inventors:
Kenneth C. Shuey, Charles L. Doughman
Patented Case
View Patent ↗
Granted: Feb 19, 1985
Filed: Jan 15, 1981
Inventors
Kenneth C. Shuey
Charles L. Doughman
Assignee (at issue)
Westinghouse Electric Company LLC
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.