US PATENT SUBCLASS 33 / 578
.~ For plural markers

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

574  DF  POINT MARKER GUIDE {4}
578.~ For plural markers

DEFINITION

Classification: 33/578

For plural markers:

(under subclass 574) Subject matter which includes means to direct the paths of a plurality of markers.