US PATENT SUBCLASS 181 / 192
.~.~ Particular shape of the horn

Current as of: June, 1999
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181 /   HD   ACOUSTICS

175  DF  SOUND-MODIFYING MEANS {12}
177  DF  .~ Intensifying horn {11}
192.~.~ Particular shape of the horn {3}
193  DF  .~.~.~> Spiral sound path
194  DF  .~.~.~> Doubly folded sound path
195  DF  .~.~.~> Wide angle annular outlet

DEFINITION

Classification: 181/192

(under subclass 177) Subject matter characterized by the form or configuration of a wall of the horn.