US PATENT SUBCLASS 297 / 284.2
.~ Having adjustment means for seat surface tension

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

284.1  DF  BOTTOM OR BACK WITH MEANS TO ALTER CONTOUR {5}
284.2.~ Having adjustment means for seat surface tension

DEFINITION

Classification: 297/284.2

Having adjustment means for seat surface tension:

(under subclass 284.1) Device having a flexible occupant engaging surface with means to shorten or lengthen the surface material intermediate a frame on which it is mounted.