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
G10K7/00—Sirens
G10K7/02—Sirens in which the sound-producing member is rotated manually or by a motor
Landscapes
Physics & Mathematics
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Engineering & Computer Science
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Acoustics & Sound
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Multimedia
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Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation
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Financial Or Insurance-Related Operations Such As Payment And Settlement
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Diaphragms For Electromechanical Transducers
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