US PATENT SUBCLASS 181 / 186
.~.~.~ Adjustable

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

Internet Version by PATENTEC © 1999      Terms of Use


181 /   HD   ACOUSTICS

175  DF  SOUND-MODIFYING MEANS {12}
177  DF  .~ Intensifying horn {11}
185  DF  .~.~ With sound-path restriction {1}
186.~.~.~ Adjustable

DEFINITION

Classification: 181/186

(under subclass 185) Subject matter wherein the structure can be altered or moved within the horn.

(1) Note. Such adjustment generally affects the loudness of the sound.

SEE OR SEARCH THIS CLASS, SUBCLASS:

197, for similar structure within a sound conducting tube.