US PATENT SUBCLASS 473 / 533
.~.~ Double strung (i.e., having striking faces formed from two spaced-apart, planar sets of strings)

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}
533.~.~ Double strung (i.e., having striking faces formed from two spaced-apart, planar sets of strings)

DEFINITION

Classification: 473/533

Double strung (i.e., having striking faces formed from two spaced-apart, planar sets of strings):

(under subclass 524) Subject matter wherein the striking member is formed from two generally coextensive strung surfaces supported in a spaced-apart relationship from each other by the surrounding peripheral supporting frame.