US PATENT SUBCLASS 182 / 161
.~.~.~ Plural element stile

Current as of: June, 1999
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182 /   HD   FIRE ESCAPE, LADDER, OR SCAFFOLD

152  DF  UNITARY FOLDABLE, RIGID SCAFFOLD OR LADDER {2}
156  DF  .~ Collapsible ladder {3}
159  DF  .~.~ Parallel moving side, pivoted rung or step {3}
161.~.~.~ Plural element stile

DEFINITION

Classification: 182/161

(under subclass 159) Device in which each stile is composed of plural parallel elements.