US PATENT SUBCLASS 342 / 411
.~.~.~.~.~ Receiver only

Current as of: June, 1999
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342 /   HD   COMMUNICATIONS: DIRECTIVE RADIO WAVE SYSTEMS AND DEVICES (E.G., RADAR, RADIO NAVIGATION)

350  DF  DIRECTIVE {10}
385  DF  .~ Beacon or receiver {2}
386  DF  .~.~ With transmisson of bearing or position determinative signals {6}
407  DF  .~.~.~ Fixed course or bearing indicating {5}
410  DF  .~.~.~.~ Glide slope transmitter or receiver {2}
411.~.~.~.~.~ Receiver only

DEFINITION

Classification: 342/411

Receiver only:

(under subclass 410) Subject matter including only the apparatus to receive the beacon signal.