US PATENT SUBCLASS 181 / 187
.~.~ Plural intensifying portions

Current as of: June, 1999
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181 /   HD   ACOUSTICS

175  DF  SOUND-MODIFYING MEANS {12}
177  DF  .~ Intensifying horn {11}
187.~.~ Plural intensifying portions {1}
188  DF  .~.~.~> Similar portions

DEFINITION

Classification: 181/187

(under subclass 177) Subject matter wherein the sound intensifying horn comprises more than one section having an increasing cross-sectional area in the direction of travel of the sound.

(1) Note. The sections may range in type from divisions within one horn to independent horns bundled together.