US PATENT SUBCLASS 333 / 163
.~.~.~ Having plural concentric helices


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

24 R  DF  COUPLING NETWORKS {15}
156  DF  .~ Delay lines including long line elements {5}
162  DF  .~.~ Helical line structures and lines developed from a helical structure {1}
163.~.~.~ Having plural concentric helices


DEFINITION

Classification: 333/163

Having plural concentric helices:

(under subclass 162) Subject matter wherein the structure for retarding wave energy is a transmission line including two or more concentric helical conductors.