US PATENT SUBCLASS 327 / 532
.~.~.~ With particular filter circuit

Current as of: June, 1999
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327 /   HD   MISCELLANEOUS ACTIVE ELECTRICAL NONLINEAR DEVICES, CIRCUITS, AND SYSTEMS

524  DF  SPECIFIC IDENTIFIABLE DEVICE, CIRCUIT, OR SYSTEM {22}
530  DF  .~ With specific source of supply or bias voltage {9}
531  DF  .~.~ Fluctuating or AC source with rectifier or filter {2}
532.~.~.~ With particular filter circuit

DEFINITION

Classification: 327/532

With particular filter circuit:

(under subclass 531) Subject matter including a filter circuit with specific structure.

SEE OR SEARCH THIS CLASS, SUBCLASS:

552+, for unwanted component eliminating utilizing a filter.

SEE OR SEARCH CLASS

333, Wave Transmission Lines and Networks,

167+, for passive wave filters, especially subclasses 181+ for smoothing type filters.