US PATENT SUBCLASS 181 / 146
.~ With sound-asborbing means

Current as of: June, 1999
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181 /   HD   ACOUSTICS

144  DF  PLURAL DIAPHRAGM SOUND SOURCES {3}
146.~ With sound-asborbing means

DEFINITION

Classification: 181/146

(under subclass 144) Subject matter including sound absorbent material associated therewith for preventing undesirable effects.

SEE OR SEARCH THIS CLASS, SUBCLASS:

126, for sound absorbing means and an enclosure.