US PATENT SUBCLASS 342 / 33
AIRCRAFT LANDING SYSTEM

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

33AIRCRAFT LANDING SYSTEM {2}
34  DF  .~> Ground control approach (GCA)
35  DF  .~> Microwave landing system (MLS)

DEFINITION

Classification: 342/33

AIRCRAFT LANDING SYSTEM:

(under the class definition) Subject matter wherein a radar signal is used by an airborne vehicle to enable the vehicle to land safely on the ground.

SEE OR SEARCH THIS CLASS, SUBCLASS:

37+, for air traffic control system including SSR OR ATCRBS,

per se.

410+, for directive signal glide slope transmitters or receivers.

SEE OR SEARCH CLASS

701, Data Processing: Vehicles, Navigation, and Relative Location,

17, for computerized radar guidance of vehicle landing.