US PATENT SUBCLASS 323 / 298
.~.~ Variable resistor

Current as of: June, 1999
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323 /   HD   ELECTRICITY: POWER SUPPLY OR REGULATION SYSTEMS

234  DF  OUTPUT LEVEL RESPONSIVE {6}
293  DF  .~ Using an impedance as the final control device {5}
298.~.~ Variable resistor

DEFINITION

Classification: 323/298

Variable resistor:

(under subclass 293) Subject matter wherein different portions or a combination of portions of a single resistance element may be used as the final control device.