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Publication of FR411680ApublicationCriticalpatent/FR411680A/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
G10K9/00—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers
G10K9/18—Details, e.g. bulbs, pumps, pistons, switches or casings
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Acoustics & Sound
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FR411680D1910-01-181910-01-18Dispositif producteur d'air comprimé pour signaux de véhicules, etc.
ExpiredFR411680A
(fr)