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JOHN KEBWIN STEWART
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JOHN KEBWIN STEWART
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Publication of FR366889ApublicationCriticalpatent/FR366889A/en
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
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FR366889D1906-06-051906-06-05
Warning device for automobiles and other vehicles
ExpiredFR366889A
(en)