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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
G10K9/22—Mountings; Casings
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FR327479D1902-12-181902-12-18
Protective device for horns of automobiles, velocipedes, etc.
ExpiredFR327479A
(en)