US PATENT SUBCLASS 33 / 274
.~ With straight edge instrument or chart

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

227  DF  STRAIGHT-LINE LIGHT RAY TYPE {20}
274.~ With straight edge instrument or chart

DEFINITION

Classification: 33/274

(under subclass 227) Device having a marker, rule, protractor, square or the like adapted to be used in plotting or in forming geometrical figures on a map or chart, the sides and angles of which correspond to various positions and angles taken by the sighting instrument.

SEE OR SEARCH CLASS

33, Geometrical Instruments,

75+, for a straight edge type geometric instrument.