US PATENT SUBCLASS 33 / 268
.~ Celestial

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

227  DF  STRAIGHT-LINE LIGHT RAY TYPE {20}
268.~ Celestial {1}
269  DF  .~.~> Time computing {1}

DEFINITION

Classification: 33/268

(under subclass 227) Device including means for locating the position of a heavenly body or means by which an observer may determine his own geos:graphic location by direct observation of the heavenly body.