(under subclass 4) Subject matter relating to the structural details of the peripheral carom rails or bumper rails which bound and define the playing surface of a pool or billiard table or gameboard.
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6+, particularly subclass 8 for a table or gameboard which is convertible between billiards and pool and in which the rails are interchangeable, shiftable, reversible, or removable to effect or facilitate the conversion.
10+, for rail structure details of a table or gameboard which is convertible to another type of furniture or to play a different type of game, particularly subclass 11 in which the rails are raised or lowered to effect the conversion and subclass 13 in which the rails are detachable or hinged so as to facilitate the conversion.
