US PATENT SUBCLASS 342 / 390
.~.~.~.~.~.~ With cycle selection

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}
387  DF  .~.~.~ Iso-chronic type {2}
388  DF  .~.~.~.~ Loran {2}
389  DF  .~.~.~.~.~ Loran-C {1}
390.~.~.~.~.~.~ With cycle selection

DEFINITION

Classification: 342/390

With cycle selection:

(under subclass 389) Subject matter providing cycle tracking of received master an slave transmissions on a predetermined cycle identified from a predetermined Loran pulse envelope point.