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TRIST PIANO PLAYER Ltd
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TRIST PIANO PLAYER Ltd
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Application filed by TRIST PIANO PLAYER LtdfiledCriticalTRIST PIANO PLAYER Ltd
Application grantedgrantedCritical
Publication of FR411263ApublicationCriticalpatent/FR411263A/fr
Un mecanismo aplicable a los aparatos neumáticos para tocar el piano, con objeto de hacer destacar cantos o melodías determinados en las piezas que se ejecutan.