US PATENT SUBCLASS 342 / 452
.~.~ By plotting table

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}
450  DF  .~ Position indicating (e.g., triangulation) {11}
452.~.~ By plotting table

DEFINITION

Classification: 342/452

By plotting table:

(under subclass 450) Subject matter including apparatus for indicating the position on a map.