US PATENT SUBCLASS 182 / 85
.~.~ Movable ladder

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

82  DF  WALL- OR FLOOR-ATTACHED {7}
83  DF  .~ Wall-mounted platform, with ladder {2}
85.~.~ Movable ladder {1}
86  DF  .~.~.~> Pivoted

DEFINITION

Classification: 182/85

(under subclass 83) Device wherein the ladder is mounted for movement.