US PATENT SUBCLASS 181 / 184
.~.~ Having apertures in walls

Current as of: June, 1999
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181 /   HD   ACOUSTICS

175  DF  SOUND-MODIFYING MEANS {12}
177  DF  .~ Intensifying horn {11}
184.~.~ Having apertures in walls

DEFINITION

Classification: 181/184

(under subclass 177) Subject matter wherein the horn has sides which are provided with openings.

(1) Note. The openings may take any shape and be covered by sound transmitting material.

(2) Note. The presence of the openings is designed to affect the quality or tone of the sound coming from or passing through the intensifying horn.

SEE OR SEARCH THIS CLASS, SUBCLASS:

182+, for horns having apertured walls which communicate with resonant chambers.