US PATENT SUBCLASS 297 / 215.12
.~.~.~ Movable back support

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

195.1  DF  STRADDLE SEAT (E.G., SADDLE TYPE, ETC.) {16}
215.1  DF  .~ Including an upwardly extending portion at rear of seat {1}
215.11  DF  .~.~ Extends upwardly above waist to provide back support {1}
215.12.~.~.~ Movable back support

DEFINITION

Classification: 297/215.12

Movable back support:

(under subclass 215.11) Device in which the back support is mounted for movement with respect to the straddle seat.