US PATENT SUBCLASS 297 / 230.13
.~ Back and supplemental back together form occupant back-engaging surface

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

230.1  DF  SUPPLEMENTAL BACK {4}
230.13.~ Back and supplemental back together form occupant back-engaging surface

DEFINITION

Classification: 297/230.13

Back and supplemental back together form occupant back-engaging surface:

(under subclass 230.1) Device wherein the supplemental back is configured to extend only partially over the back of the seating device such that an occupant's back is engaged by both the back of the seating device and the supplemental back concurrently.