US PATENT SUBCLASS 182 / 33.4
.~.~.~.~ Fixed steps

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

20  DF  CONVERTIBLE {2}
21  DF  .~ Ladder {5}
33  DF  .~.~ Chair or stool {3}
33.3  DF  .~.~.~ Steps on chair back {1}
33.4.~.~.~.~ Fixed steps

DEFINITION

Classification: 182/33.4

(under subclass 33.3) Device wherein the rungs of the ladder are immovably held by their stiles and do not pivot with respect thereto.