Music teaching device

Details Music teaching device Music teaching device

1974-12-16

1976-06-01

Hix, L. T.

Music

Accessories

Teaching devices

235 78R, G09B 1502

Patent

active

039600467

ABSTRACT:
A music teaching device in which the musical scale is marked on a circular disc co-operable with a second disc bearing musical information the two discs being relatively rotatable about their centers to relatively align the scale markings with the information on the second disc.

REFERENCES:
patent: 763870 (1904-06-01), Finley
patent: 2913885 (1940-03-01), Riley
patent: 3070371 (1962-12-01), Hearle
patent: 3427918 (1969-02-01), Amoruso
patent: 3481241 (1969-12-01), Gaillard
patent: 3572205 (1971-03-01), Scholfield
patent: 3592099 (1971-07-01), Gibby
patent: 3841192 (1974-10-01), Leonard

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