US PATENT SUBCLASS 333 / 233
.~.~.~.~ Using movable wall

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

219  DF  RESONATORS (DISTRIBUTED PARAMETER TYPE) {7}
227  DF  .~ Cavity resonator {4}
231  DF  .~.~ With tuning {1}
232  DF  .~.~.~ Having movable element {1}
233.~.~.~.~ Using movable wall

DEFINITION

Classification: 333/233

Using movable wall:

(under subclass 232) Subject matter wherein the movable element is a wall that moves or is flexible.