G - Physics
09
B
58/21, 35/33
G09B 15/00 (2006.01) G09B 15/02 (2006.01) G10G 1/00 (2006.01)
Patent
CA 1059756
ABSTRACT OF THE DISCLOSURE OPTICAL METRONOMES WITH A SPOT OR COLUMN OF LIGHT SHINING THROUGH THE SHEET OF MUSIC SIMULTANEOUSLY IN ALL STAVES OR ALTERNATIVELY IN ALL MEASURES UTILIZING INDIVIDUAL LAMPS, FIBER OPTICS, OR LAMPS LOCATED IN REFLECTING CHANNELS. LIGHTS ILLUMINATE SUCCESSIVELY AND ARE CONTROLLED BY NOTCH-DRIVEN PERFORATED SHIELDS, CONTACT ARMS, OR AN OSCILLATOR AND GATING CIRCUITRY.
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