US PATENT SUBCLASS 473 / 537
.~.~ Having dimensional characteristic or other parameter specified by a number, numeric variable, or mathematical formula (e.g., location of center of gravity, elastic modulus of a string, weight of racket, etc.)

Current as of: June, 1999
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473 /   HD   GAMES USING TANGIBLE PROJECTILE

516  DF  PLAYER HELD AND POWERED, NONMECHANICAL PROJECTOR, PER SE, FOR PROJECTING AERIAL PROJECTILE BY STRIKING; PART THEREOF OR ACCESSORY THEREFOR {8}
524  DF  .~ Racket or paddle; accessory therefor (e.g., a tennis racket, tennis racket press, etc.) {19}
537.~.~ Having dimensional characteristic or other parameter specified by a number, numeric variable, or mathematical formula (e.g., location of center of gravity, elastic modulus of a string, weight of racket, etc.) {1}
538  DF  .~.~.~> Of handle or grip

DEFINITION

Classification: 473/537

Having dimensional characteristic or other parameter specified by a number, numeric variable, or mathematical formula (e.g., location of center of gravity, elastic modulus of a string, weight of racket, etc.):

(under subclass 524) Subject matter wherein any one of the set of physical properties whose values determine the characteristics or behavior of a racket, a part thereof, or a combination of parts thereof is designated (a) by a numeral

or combination of numerals, (b) by a symbol representing a number, or (c) by a numerical or symbolic mathematical statement or expression.

(1) Note. A number, numeric variable, or numeric formula which designates only the number of rackets or parts thereof (e.g., three rackets; ten strings; two rackets, one having one handle and the other having two handles; etc.) is not considered to specify a dimensional characteristic or parameter and is, therefore, not included in this and the indented subclass.

(2) Note. A number or mathematical formula may be expressed in any number system or by the word equivalent thereof (e.g., II+II=IV, two plus two equals four, etc.).