US PATENT SUBCLASS 434 / 92
.~.~ Orthogonal projection

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}
92.~.~ Orthogonal projection

DEFINITION

Classification: 434/92

Orthogonal projection:

(under subclass 85) Subject matter relating to drawing an object by projecting lines representing its shape onto mutually perpendicular planes.