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G10B—ORGANS, HARMONIUMS OR SIMILAR WIND MUSICAL INSTRUMENTS WITH ASSOCIATED BLOWING APPARATUS
G10B3/00—Details or accessories
G10B3/16—Swell chambers; Accentuating means
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FR429538D1910-03-281911-03-27Dispositif pour l'obtention d'une variation d'intensité du son dans les instruments à tuyaux d'orgue
ExpiredFR429538A
(fr)