US PATENT SUBCLASS 84 / 378
.~.~.~.~ With resonance chambers

Current as of: June, 1999
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84 /   HD   MUSIC

1  DF  INSTRUMENTS {9}
330  DF  .~ Wind {5}
375  DF  .~.~ Minor reed {2}
377  DF  .~.~.~ Harmonicas {2}
378.~.~.~.~ With resonance chambers

DEFINITION

Classification: 84/378

A resonance tube or chamber is added.