US PATENT SUBCLASS 84 / 338
.~.~.~.~ 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}
332  DF  .~.~.~ Actions {8}
338.~.~.~.~ Electropneumatic {1}
339  DF  .~.~.~.~.~> Details

DEFINITION

Classification: 84/338

Includes organizations in which electromagnetic valves control pneumatics; also pneumato-electric actions in which pneumatics control switches in the circuits of electromagnets.