US PATENT SUBCLASS 446 / 216
.~.~ Whistle or siren

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


446 /   HD   AMUSEMENT DEVICES: TOYS

176  DF  OPERATED BY RELATIVELY MOVING FLUID OR PRESSURE DIFFERENTIAL {9}
213  DF  .~ Sounding {3}
216.~.~ Whistle or siren

DEFINITION

Classification: 446/216

Whistle or siren:

(under subclass 213) Device comprising either (1) a portion having a relatively small opening which affects fluid passing through it to cause the sound, or (2) a rotating member which produces rapid interruptions in a fluid current to cause the

sound.

SEE OR SEARCH THIS CLASS, SUBCLASS:

204, for a whistle or siren operated by fluid from a mouthpiece, and see the search notes thereunder for related loci.