US PATENT SUBCLASS 297 / 452.24
.~.~.~ Contoured rigid base

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

452.1  DF  BOTTOM OR BACK {12}
452.21  DF  .~ Contoured bottom {2}
452.23  DF  .~.~ Laterally extending contour {3}
452.24.~.~.~ Contoured rigid base {1}
452.25  DF  .~.~.~.~> Including symmetrical thigh-support portions

DEFINITION

Classification: 297/452.24

Contoured rigid base:

Device under 452.23 wherein the contoured surface is made of hard material; e.g., wood, rigid plastic, metal, etc.