US PATENT SUBCLASS 434 / 91
.~.~ Perspective

Current as of: June, 1999
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434 /   HD   EDUCATION AND DEMONSTRATION

81  DF  VISUAL ART OR CRAFT, ARTISTIC ADORNMENT, OR COLOR TRAINING OR DEMONSTRATION {9}
85  DF  .~ Drawing {7}
91.~.~ Perspective

DEFINITION

Classification: 434/91

Perspective:

(under subclass 85) Subject matter relating to a drawing which gives the impression that parts thereof are at different distances from the viewer.