US PATENT SUBCLASS 473 / 241
.~.~.~.~.~ Bubble leveler

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}
238  DF  .~.~.~.~ Adjustable implement or static position indicator (e.g., with respect to the golfer, projectile, target, etc.) {4}
241.~.~.~.~.~ Bubble leveler

DEFINITION

Classification: 473/241

Bubble leveler:

(under subclass 238) Subject matter wherein the structure comprises a globule of gas trapped in a liquid to provide the player with information concerning proper horizontal orientation of the first or second instrument.