US PATENT SUBCLASS 342 / 437
.~.~.~.~ Including more than two antennas

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}
417  DF  .~.~ Direction-finding receiver only {14}
432  DF  .~.~.~ With plural fixed antenna pattern comparing {5}
437.~.~.~.~ Including more than two antennas

DEFINITION

Classification: 342/437

Including more than two antennas:

(under subclass 432) Subject matter including more than two fixed directional antennas.