US PATENT SUBCLASS 338 / 100
.~.~ Granular

Current as of: June, 1999
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338 /   HD   ELECTRICAL RESISTORS

68  DF  MECHANICALLY VARIABLE (E.G., RHEOSTAT) {24}
99  DF  .~ Surfaces pressed together (e.g., compressible type) {2}
100.~.~ Granular

DEFINITION

Classification: 338/100

(under subclass 99) Subject matter wherein at least one of the resistance masses is granular or powdered in form.

SEE OR SEARCH THIS CLASS, SUBCLASS:

1, for coherer type resistors.

88, for penetrating type resistors having granular resistance elements.

199, for a mechanically adjustable resistor generally with a casing or housing.

223+, for granular or powdered resistors generally.

SEE OR SEARCH CLASS 330, Amplifiers,

61, for carbon microphone type amplifiers.