US PATENT SUBCLASS 297 / 48
.~.~ Back articulated to both leg pairs

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

16.1  DF  COLLAPSIBLE CHAIR; I.E., RELATIVELY FOLDING BOTTOM, BACK, AND LEGS {15}
46  DF  .~ Back and legs collapse concurrently {3}
48.~.~ Back articulated to both leg pairs {1}
49  DF  .~.~.~> Above and below bottom

DEFINITION

Classification: 297/48

(under subclass 46) Device wherein the back is joined to both the front legs and the rear legs.