US PATENT SUBCLASS 342 / 44
.~ Unique identity

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

42  DF  RADAR TRANSPONDER SYSTEM {6}
44.~ Unique identity

DEFINITION

Classification: 342/44

Unique identity:

(under subclass 42) Subject matter wherein the coded radar retransmitted (reply) signal contains information used to distinguish the transponder station from all others.