US PATENT SUBCLASS 178 / 117
.~.~ Coherer


Current as of: June, 1999
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178 /   HD   TELEGRAPHY

2 R  DF  SYSTEMS {21}
66.1  DF  .~ Alternating or pulsating current {4}
117.~.~ Coherer


DEFINITION

Classification: 178/117

Coherer:

(under subclass 66.1) Subject matter including a variable resistance device consisting of loosely packed conductive particles placed between two electrodes, the resistance of the conductive path between the electrodes being a function of an applied electric field.

SEE OR SEARCH CLASS

257, Active Solid-State Devices (e.g., Transistors, Solid-State Diodes),

43, for active solid-state type coherers.

329, Demodulators,

371, for a coherer type amplitude modulation demodulator.