US PATENT SUBCLASS 84 / 58
.~.~.~.~.~.~ Bleeds

Current as of: June, 1999
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84 /   HD   MUSIC

1  DF  INSTRUMENTS {9}
*  DD  .~ Automatic {13}
7  DF  .~.~ Stringed {4}
13  DF  .~.~.~ Pianos {5}
24  DF  .~.~.~.~ Pneumatic type {10}
50  DF  .~.~.~.~.~ Pneumatic construction {8}
58.~.~.~.~.~.~ Bleeds {1}
59  DF  .~.~.~.~.~.~.~> With valve

DEFINITION

Classification: 84/58

Constructions having minute openings into a passage, especially into a tracker-duct.