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Publication of FR825618ApublicationCriticalpatent/FR825618A/en
G10C—PIANOS, HARPSICHORDS, SPINETS OR SIMILAR STRINGED MUSICAL INSTRUMENTS WITH ONE OR MORE KEYBOARDS
G10C3/00—Details or accessories
G10C3/12—Keyboards; Keys
G—PHYSICS
G10—MUSICAL INSTRUMENTS; ACOUSTICS
G10C—PIANOS, HARPSICHORDS, SPINETS OR SIMILAR STRINGED MUSICAL INSTRUMENTS WITH ONE OR MORE KEYBOARDS
G10C3/00—Details or accessories
G10C3/28—Transposing devices
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FR825618D1936-11-251936-11-25
New keyboard for keyboard musical instruments, and device for performing transposition on this keyboard
ExpiredFR825618A
(en)
Device for musical education adapting to all keyboard instruments and allowing to obtain, simultaneously, hearing and the conventional graphic representation of musical notes