US PATENT SUBCLASS 473 / 532
.~.~ Having replaceable string 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}
532.~.~ Having replaceable string frame

DEFINITION

Classification: 473/532

Having replaceable string frame:

(under subclass 524) Subject matter wherein the striking member comprises a strung surface formed by a plurality of spaced apart, elongated strings, stringlike elements, or their equivalent stretched in an intersecting arrangement across a surrounding peripheral subframe and wherein the strings, stringlike elements, or their equivalent and the subframe are releasably mounted as a unit to a surrounding or coterminous main supporting frame.