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App J E Malivert SA Des
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App J E Malivert SA Des
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Application filed by App J E Malivert SA DesfiledCriticalApp J E Malivert SA Des
Application grantedgrantedCritical
Publication of FR536965ApublicationCriticalpatent/FR536965A/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
G10K9/12—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers electrically operated
G10K9/13—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers electrically operated using electromagnetic driving means
G10K9/15—Self-interrupting arrangements
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Physics & Mathematics
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Electromagnetism
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Engineering & Computer Science
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Acoustics & Sound
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Multimedia
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FR536965D1920-07-271921-06-16Perfectionnements aux avertisseurs sonores électriques
ExpiredFR536965A
(fr)