US PATENT SUBCLASS 473 / 264
.~.~.~.~ Plural barriers, vertically spaced apart

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

131  DF  GOLF {23}
219  DF  .~ Practice swingable implement or indicator associated with swingable implement {4}
257  DF  .~.~ Swingable implement swing path indicator {2}
261  DF  .~.~.~ Barrier which monitors swingable implement head movement {4}
264.~.~.~.~ Plural barriers, vertically spaced apart

DEFINITION

Classification: 473/264

Plural barriers, vertically spaced apart:

(under subclass 261) Subject matter and further comprising a second structure separated from the first structure in a vertical direction and adapted to be contacted by the instrument, to provide the player with vertical distance information.