US PATENT SUBCLASS 473 / 350
.~.~.~.~ Recess or cavity behind striking face

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

131  DF  GOLF {23}
282  DF  .~ Club or club support {17}
324  DF  .~.~ Head {15}
349  DF  .~.~.~ Particular material composition or mass distribution {1}
350.~.~.~.~ Recess or cavity behind striking face

DEFINITION

Classification: 473/350

Recess or cavity behind striking face:

(under subclass 349) Subject matter wherein the ball-striking portion comprises a ball contacting surface and a hole or depressed region located opposite said surface.