US PATENT SUBCLASS 33 / 354
.~ Combined

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

300  DF  INDICATOR OF DIRECTION OF FORCE TRAVERSING NATURAL MEDIA {23}
354.~ Combined

DEFINITION

Classification: 33/354

(under subclass 300) Device, (1) combined with subject matter of another class or (2) united with a second device, said second device having a function serving to perfect the class device for its intended function.