US PATENT SUBCLASS 434 / 211
.~ Geometry, trigonometry, or physical mathematic model structure

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

188  DF  MATHEMATICS {4}
211.~ Geometry, trigonometry, or physical mathematic model structure {5}
212  DF  .~.~> Pythagorean theorem
213  DF  .~.~> Property of sphere or spheroid
214  DF  .~.~> Property of circle or ellipse
215  DF  .~.~> Demonstration means using relatively turnable elements
216  DF  .~.~> Demonstration means using filament (e.g., string, etc.) to define geometric shape

DEFINITION

Classification: 434/211

Geometry, trigonometry, or physical mathematical model structure:

(under subclass 188) Subject matter relating to the branches of mathematics that deal with (a) the measurement, properties, and relationships of points, lines, angles,

surfaces, and solids, (b) the study of trigonometric functions and their applications, or (c) relating to a physical representation of some mathematical relationship, e.g.., a model of a parabola.

SEE OR SEARCH CLASS

33, Geometrical Instruments, appropriate subclasses for geometrical instruments.

708, Electrical Computers: Arithmetic Processing and Calculating,

811+, for the evaluation of trigonometric functions by analog computations.