Granted Patent
Utility
US 5,195,016 · App. 07/905,153
Photoelectric load control system
Inventor:
John Powers
Patented Case
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Granted: Mar 16, 1993
Filed: Jun 25, 1992
Inventor
John Powers
Assignee (at issue)
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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.