US PATENT SUBCLASS 297 / 283.3
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Current as of: June, 1999
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297 /   HD   CHAIRS AND SEATS

283.1  DF  CHANGEABLE OR REVERSIBLE SUPPORTING SURFACE {3}
283.3.~ Back

DEFINITION

Classification: 297/283.3

Back supporting surfaces:

(under subclass 283.1) Device wherein the occupant supporting component, provided with a plurality of occupant contacting surfaces, is constructed to support the back of an occupant therein.