US PATENT SUBCLASS 84 / 405
.~.~.~ With electric action

Current as of: June, 1999
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84 /   HD   MUSIC

1  DF  INSTRUMENTS {9}
402  DF  .~ Rigid vibrators {5}
403  DF  .~.~ Bars and supports {2}
405.~.~.~ With electric action

DEFINITION

Classification: 84/405

The bars are vibrated by electromagnets.