US PATENT SUBCLASS 297 / 452.44
.~.~.~ Wire spring element between pads' layers

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

452.1  DF  BOTTOM OR BACK {12}
452.42  DF  .~ Including a ventilating means {2}
452.43  DF  .~.~ Supplemental ventilating pad {2}
452.44.~.~.~ Wire spring element between pads' layers

DEFINITION

Classification: 297/452.44

Wire spring element between pads' layers:

(under subclass 452.43) Device including a convoluted spring wire located intermediate a top layer and a bottom layer of the pad.