US PATENT SUBCLASS 33 / 20.4
.~.~ Stereoscopic mapping


Current as of: June, 1999
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33 /   HD   GEOMETRICAL INSTRUMENTS

18.1  DF  SCRIBER {10}
20.1  DF  .~ Sight-line controlled {3}
20.4.~.~ Stereoscopic mapping


DEFINITION

Classification: 33/20.4

Stereoscopic mapping:

(under subclass 20.1) Subject matter wherein the sighting means views two stereoscopic images to control the scribing member.