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JULES GIRIN
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JULES GIRIN
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Application filed by JULES GIRINfiledCriticalJULES GIRIN
Application grantedgrantedCritical
Publication of FR525286ApublicationCriticalpatent/FR525286A/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
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Electromagnetism
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Engineering & Computer Science
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Acoustics & Sound
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FR525286A1920-04-161920-04-16Appareil électro-avertisseur pour voitures automobiles et autres applications
ExpiredFR525286A
(fr)