US PATENT SUBCLASS 342 / 140
.~.~.~ With azimuth and elevation determination

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

118  DF  DETERMINING DISTANCE {11}
134  DF  .~ With pulse modulation {4}
139  DF  .~.~ Combined with determining direction {3}
140.~.~.~ With azimuth and elevation determination

DEFINITION

Classification: 342/140

With azimuth and elevation determination:

(under subclass 139) Subject matter including the object's angular measurement in a horizontal plane and in a clockwise direction and its angular position tangent to the earth's surface.