US PATENT SUBCLASS 84 / 373
.~.~.~ Couplers


Current as of: June, 1999
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84 /   HD   MUSIC

1  DF  INSTRUMENTS {9}
330  DF  .~ Wind {5}
351  DF  .~.~ Reed organs {10}
373.~.~.~ Couplers


DEFINITION

Classification: 84/373

Devices to cause two notes, usually an octave apart, to sound when one key is depressed.

SEE OR SEARCH THIS CLASS, SUBCLASS:

168, 235 and 340.