US PATENT SUBCLASS 473 / 542
.~.~.~ Having nonplanar string-hole pattern or arrangement in frame

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}
540  DF  .~.~ Having string mounting feature other than mere through-holes lying in string plane {2}
542.~.~.~ Having nonplanar string-hole pattern or arrangement in frame

DEFINITION

Classification: 473/542

Having nonplanar string-hole pattern or arrangement in frame:

(under subclass 540) Subject matter comprising a specified arrangement of string holes extending into or through the racket frame and wherein the centers of the string holes lie in two or more spaced or intersecting planes.