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EDOUARD LEHMAN
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EDOUARD LEHMAN
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Application filed by EDOUARD LEHMANfiledCriticalEDOUARD LEHMAN
Application grantedgrantedCritical
Publication of FR447704ApublicationCriticalpatent/FR447704A/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
G10K9/10—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers driven by mechanical means only
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Physics & Mathematics
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Engineering & Computer Science
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Acoustics & Sound
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FR447704D1911-11-041911-11-04Appareil avertisseur pour automobiles et autres véhicules
ExpiredFR447704A
(fr)