US PATENT SUBCLASS 340 / 903
.~.~ Relative distence between vehicles (e.g., collision alert)
Current as of:
June, 1999
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340 /
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COMMUNICATIONS: ELECTRICAL
901
DF
EXTERNAL CONDITION VEHICLE-MOUNTED INDICATOR OR ALARM
{3}
902
DF
.~ Transmitter in another vehicle (e.g., emergency vehicle) {1}
903
.~.~ Relative distence between vehicles (e.g., collision alert)
DEFINITION
Classification: 340/903
Relative distance between vehicles (e.g., collision alert):
(under subclass 902) Subject matter wherein the alarm indicates the separation between vehicles.
(1) Note. Potential collision alerting systems are included here when the vehicles are not aircraft.
SEE OR SEARCH THIS CLASS, SUBCLASS:
961, for potential collision alerting systems when used on aircraft.
SEE OR SEARCH CLASS
342, Communications: Directive Radio Wave Systems and Devices (e.g., Radar, Radio Navigation),
29+, 41, and 455 for collision avoidance apparatus using radio wave communications.