US PATENT SUBCLASS 473 / 376
.~.~.~.~ Plural diverse layers

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

131  DF  GOLF {23}
351  DF  .~ Ball {8}
371  DF  .~.~ Particular unitary or layered construction {3}
374  DF  .~.~.~ Diverse layer between spherical core and cover {2}
376.~.~.~.~ Plural diverse layers

DEFINITION

Classification: 473/376

Plural diverse layers:

(under subclass 374) Subject matter and further including a second distinct spherical strata positioned between the first innermost spherical portion and the striking surface.