US PATENT SUBCLASS 297 / 452.29-- .~ Contoured back

US PATENT SUBCLASS 297 / 452.29
.~ Contoured back

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

452.1	DF	BOTTOM OR BACK {12}
452.29		.~ Contoured back {3}
452.3	DF	.~.~> For lower back; i.e., lumbar region {2}
452.33	DF	.~.~> Laterally extending contour {1}
452.37	DF	.~.~> Having varying density foam

DEFINITION

Classification: 297/452.29

Contoured back:

(under subclass 452.1) Device including a back configured to substantially conform with the shape or curvature of a back of a seated occupant.

SEE OR SEARCH THIS CLASS, SUBCLASS:

230.1+, for a contoured supplemental back.

284.1+, for a back having means for changing its contour.

411.41, for an armrest extending from a back.

452.21+, for a contoured bottom.

464+, and 486, for a body retainer comprising movable wings extending forwardly from the side edges of a back.