US PATENT SUBCLASS 297 / 452.46
.~.~ Apertures in primary bottom or back

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}
452.46.~.~ Apertures in primary bottom or back {1}
452.47  DF  .~.~.~> Aperture in upholstery

DEFINITION

Classification: 297/452.46

Apertures in primary bottom or back:

(under subclass 452.42) Device wherein the back or bottom is a primary back or bottom and the ventilating means are holes in the primary bottom or back of the seating device.