US PATENT SUBCLASS 342 / 51
.~ Transponder only

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}
51.~ Transponder only

DEFINITION

Classification: 342/51

Transponder only:

(under subclass 42) Subject matter including the transponder means, per se.

SEE OR SEARCH THIS CLASS, SUBCLASS:

30+, for transponders in aircraft collision avoidance systems.

37+, for transponders is SSR or ATCRBS systems.