US PATENT SUBCLASS 473 / 261
.~.~.~ Barrier which monitors swingable implement head movement

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.~.~.~ Barrier which monitors swingable implement head movement {4}
262  DF  .~.~.~.~> Barrier is projectile addressing surface
263  DF  .~.~.~.~> Self-righting
264  DF  .~.~.~.~> Plural barriers, vertically spaced apart
265  DF  .~.~.~.~> Plural barriers, horizontally spaced apart

DEFINITION

Classification: 473/261

Barrier which monitors swingable implement head movement:

(under subclass 257) Subject matter wherein the first or second instrument comprises an object striking end, and wherein the information providing means comprises a first structure adapted to be contacted by the instrument to provide the player with information concerning the motion of the object striking end.