US PATENT SUBCLASS 333 / 174
.~.~ With variable response

Current as of: June, 1999
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333 /   HD   WAVE TRANSMISSION LINES AND NETWORKS

24 R  DF  COUPLING NETWORKS {15}
167  DF  .~ Frequency domain filters utilizing only lumped parameters {10}
174.~.~ With variable response

DEFINITION

Classification: 333/174

With variable response:

(under subclass 167) Subject matter wherein at least one of the filter parameters is made adjustable in order to vary the response of the filter.