US PATENT SUBCLASS 434 / 207
.~.~ Color used in teaching means

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

188  DF  MATHEMATICS {4}
191  DF  .~ Arithmetic {17}
207.~.~ Color used in teaching means

DEFINITION

Classification: 434/207

Color used in teaching means:

(under subclass 191) Subject matter wherein color is employed to relate to a specific number or set of numbers.

SEE OR SEARCH THIS CLASS, SUBCLASS:

98+, for color training devices or charts.