Granted Patent
Utility
US 6,474,837 · App. 09/716,713
Lighting device with beam altering mechanism incorporating a plurality of light souces
Inventor:
Richard S. Belliveau
Patented Case
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Granted: Nov 5, 2002
Filed: Nov 20, 2000
Inventor
Richard S. Belliveau
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.