US PATENT SUBCLASS 342 / 37
.~ Secondary Surveilance Radar (SSR) or Air Traffic Control Radar Beacon System (ATCRBS)

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

36  DF  AIR TRAFFIC CONTROL {1}
37.~ Secondary Surveilance Radar (SSR) or Air Traffic Control Radar Beacon System (ATCRBS) {3}
38  DF  .~.~> With altitude information
39  DF  .~.~> With side lobe suppression
40  DF  .~.~> With defruiting or degarbling

DEFINITION

Classification: 342/37

Secondary surveillance radar (SSR) or air traffic control radar beacon system (ATCRBS):

(under subclass 36) Subject matter including a radar beacon-transponder means to maintain cognizance or to regulate the paths of selected vehicles within a selected

area such as an airport terminal area or air route.

SEE OR SEARCH THIS CLASS, SUBCLASS:

32, for aircraft collision avoidance systems having SSR or ATCRBS.