US PATENT SUBCLASS 182 / 92
.~.~ Readily detachable

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

82  DF  WALL- OR FLOOR-ATTACHED {7}
90  DF  .~ Independent rung or step {2}
92.~.~ Readily detachable

DEFINITION

Classification: 182/92

(under subclass 90) Device wherein the step or rung is readily detachable from its supporting means without the use of tools.