US PATENT SUBCLASS 84 / 347
.~.~.~.~ Electropneumatic

Current as of: June, 1999
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84 /   HD   MUSIC

1  DF  INSTRUMENTS {9}
330  DF  .~ Wind {5}
331  DF  .~.~ Pipe organs {4}
346  DF  .~.~.~ Swells {1}
347.~.~.~.~ Electropneumatic

DEFINITION

Classification: 84/347

The shutters are operated or controlled by an electropneumatic action.