US PATENT SUBCLASS 182 / 159
.~.~ Parallel moving side, pivoted rung or step

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.~.~ Parallel moving side, pivoted rung or step {3}
160  DF  .~.~.~> Storage providing component
161  DF  .~.~.~> Plural element stile
162  DF  .~.~.~> With collapsible prop

DEFINITION

Classification: 182/159

(under subclass 156) Device in which plural stiles, or plural elements of a single stile, move toward each other, with a rung or step pivoted thereto.

SEE OR SEARCH THIS CLASS, SUBCLASS:

96, for a similar type folding ladder structurally installed.