US PATENT SUBCLASS 84 / 677
.~.~.~.~ With space discharging means

Current as of: June, 1999
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84 /   HD   MUSIC

1  DF  INSTRUMENTS {9}
600  DF  .~ Electrical musical tone generation {5}
671  DF  .~.~ Electric analog oscillators {9}
675  DF  .~.~.~ With frequency multiplication or division {2}
677.~.~.~.~ With space discharging means

DEFINITION

Classification: 84/677

With space discharging means:

(under subclass 675) Subject matter wherein the oscillators, frequency multipliers or frequency dividers include one or more devices in which conduction of electrons takes place through a vacuum or gaseous medium.

SEE OR SEARCH THIS CLASS, SUBCLASS:

674, for space discharging mean with variable frequency.