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Sparks Withington Co
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Sparks Withington Co
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Application filed by Sparks Withington CofiledCriticalSparks Withington Co
Application grantedgrantedCritical
Publication of FR485439ApublicationCriticalpatent/FR485439A/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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Multimedia
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FR485439D1917-05-111917-05-11Perfectionnements aux avertisseurs
ExpiredFR485439A
(fr)