G - Physics
09
B
58/21, 35/30
G09B 15/02 (2006.01)
Patent
CA 1079521
ABSTRACT OF THE DISCLOSURE An optical lighted metronome has a column of light projected onto a sheet of music by means of individual lamps passing light through lenses with the lights connected to illuminate successively by means of motor-driven contact arms or electronic circuitry.
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