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LUCIEN JULIE
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LUCIEN JULIE
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Publication of FR400510ApublicationCriticalpatent/FR400510A/fr
G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
G10K7/00—Sirens
G10K7/02—Sirens in which the sound-producing member is rotated manually or by a motor
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FR400510D1909-03-081909-03-08Perfectionnements à la construction des sirènes pour voitures automobiles, canots, etc.
ExpiredFR400510A
(fr)