US PATENT SUBCLASS 84 / 62
.~.~.~.~.~.~.~ Outside


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}
60  DF  .~.~.~.~.~.~ Valves and seats {2}
62.~.~.~.~.~.~.~ Outside {1}
63  DF  .~.~.~.~.~.~.~>.~ Adjustable


DEFINITION

Classification: 84/62

Patents for double valves the operating-surfaces of which face away from one another.