US PATENT SUBCLASS 297 / 344.24
.~.~.~ Having additional movement in horizontal plane

Current as of: June, 1999
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297 /   HD   CHAIRS AND SEATS

311  DF  MOVABLE BOTTOM {5}
344.1  DF  .~ Bottom and back movable as a unit {3}
344.21  DF  .~.~ About vertical axis; i.e., rotates {4}
344.24.~.~.~ Having additional movement in horizontal plane

DEFINITION

Classification: 297/344.24

Having additional movement in horizontal plane:

(under subclass 344.21) Device including a means for allowing movement of the unit in a direction perpendicular to the vertical axis.