US PATENT SUBCLASS 455 / 456
.~.~ Location monitoring

Current as of: June, 1999
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455 /   HD   TELECOMMUNICATIONS

403  DF  RADIOTELEPHONE SYSTEM {12}
422  DF  .~ Zoned or cellular telephone system {14}
456.~.~ Location monitoring {1}
457  DF  .~.~.~> Location display

DEFINITION

Classification: 455/456

Location monitoring:

(under subclass 422) Subject matter including means to determine the position of a mobile station.

SEE OR SEARCH THIS CLASS, SUBCLASS:

440, for handoff control based on location.

SEE OR SEARCH CLASS

340, Communications: Electrical,

988+, for vehicle location indication.

342, Communications: Directive Radio Wave Systems and Devices (e.g., Radar, Radio Navigation),

450+, for directive position indicating in noncellular and non-radiotelephone systems.