US PATENT SUBCLASS 5 / 215
.~.~.~.~ Depression self-tightener

Current as of: June, 1999
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5 /   HD   BEDS

131  DF  BEDSTEADS {6}
400  DF  .~ Having bottom {9}
*  DD  .~.~ Fabricated elastic flats {6}
211  DF  .~.~.~ Tighteners {6}
215.~.~.~.~ Depression self-tightener

DEFINITION

Classification: 5/215

(under subclass 211) Devices comprising frame structures in which some or all of the rails attached to the fabric are intended to be depressed and spread farther apart under the weight of the occupant, thus stretching the fabric.