US PATENT SUBCLASS 116 / 147
SIRENS
Current as of: June, 1999
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DEFINITION
Classification: 116/147
(under the class definition) Sound-producing devices provided with diaphragms capable of rotation and pierced with holes, whereby, when rotated, by escaping gas a succession of sound-producing puffs or impacts is produced.
SEE OR SEARCH CLASS
446, Amusement Devices: Toys,
205, for a mouth-actuated whistle or siren.
