US PATENT SUBCLASS 434 / 195
.~.~ Manually manipulated elements having size proportional to numeric value

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

188  DF  MATHEMATICS {4}
191  DF  .~ Arithmetic {17}
195.~.~ Manually manipulated elements having size proportional to numeric value {1}
196  DF  .~.~.~> Fraction representing elements

DEFINITION

Classification: 434/195

Manually manipulated elements having size proportional to numeric value:

(under subclass 191) Subject matter including pieces handled by hand and sized according to their numeric value.