US PATENT SUBCLASS 33 / 320
.~.~ Geographic position indication (i.e., latitude or longitude)

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33 /   HD   GEOMETRICAL INSTRUMENTS

300  DF  INDICATOR OF DIRECTION OF FORCE TRAVERSING NATURAL MEDIA {23}
318  DF  .~ Gyroscopically controlled or stabilized {5}
320.~.~ Geographic position indication (i.e., latitude or longitude)

DEFINITION

Classification: 33/320

(under subclass 318) Device wherein the gyroscopic means is used to indicate the latitude or longitude of the point on the earth's surface occupied by the gyroscope.