US PATENT SUBCLASS 473 / 237
.~.~.~.~ Indication is a mark made by implement swing

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}
226  DF  .~.~ Device attachable to or integral with swingable implement {6}
231  DF  .~.~.~ Adjustable swingable implement, or swing or position indicator {6}
237.~.~.~.~ Indication is a mark made by implement swing

DEFINITION

Classification: 473/237

Indication is a mark made by implement swing:

(under subclass 231) Subject matter wherein the first or second swingable instrument carries a device that provides a trace visible to the player for providing information regarding a swing path of the instrument, or wherein a surface of an object striking face on the instrument is modified (e.g., with chalk etc.) to provide a player with information concerning the position on the face where the object has struck it.