US PATENT SUBCLASS 297 / 230.1
SUPPLEMENTAL BACK

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

230.1SUPPLEMENTAL BACK {4}
230.11  DF  .~> Flexible occupant back-engaging surface spans framework
230.12  DF  .~> Including a rigid panel
230.13  DF  .~> Back and supplemental back together form occupant back-engaging surface
230.14  DF  .~> Including a means to adjust supplemental back relative to a seat back

DEFINITION

Classification: 297/230.1

SUPPLEMENTAL BACK:

(under the class definition) Device comprising a back configured to be mounted on or to be coextended with an occupant-engaging surface of a back of a seating device.

SEE OR SEARCH THIS CLASS, SUBCLASS:

219.1+, for a supplemental flexible pad without a rigid support frame.

250.1+, for rigid supplemental seats.

352, for a portable back with means to connect it with a subjacent backless bottom; e.g., bleacher seat.