US PATENT SUBCLASS 473 / 12
.~.~.~ Vertically movable playing surface

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

1  DF  BILLIARDS OR POOL {8}
4  DF  .~ Table or gameboard {16}
10  DF  .~.~ Convertible to another type of furniture or to different type of game playing surface {4}
12.~.~.~ Vertically movable playing surface

DEFINITION

Classification: 473/12

Vertically movable playing surface:

(under subclass 10) Subject matter wherein the conversion process involves raising or lowering the playing surface.