US PATENT SUBCLASS 473 / 331
.~.~.~.~ Plural grooves

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}
330  DF  .~.~.~ Curved, grooved, or roughened striking face {1}
331.~.~.~.~ Plural grooves

DEFINITION

Classification: 473/331

Plural grooves:

(under subclass 330) Subject matter wherein the ball-contacting surface comprises plural striations spaced from each other.