US PATENT SUBCLASS 297 / 452.36
.~.~.~.~ Rigid or semirigid preshaped panel

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

452.1  DF  BOTTOM OR BACK {12}
452.29  DF  .~ Contoured back {3}
452.33  DF  .~.~ Laterally extending contour {1}
452.34  DF  .~.~.~ Including a projected side member {2}
452.36.~.~.~.~ Rigid or semirigid preshaped panel

DEFINITION

Classification: 297/452.36

Rigid or semirigid preshaped panel:

(under subclass 452.34) Device wherein the contoured back is preshaped and made of material that is substantially nonyielding or that yields to a slight degree.

SEE OR SEARCH THIS CLASS, SUBCLASS:

230.12, for a supplemental back which includes a rigid panel.