US PATENT SUBCLASS 182 / 90
.~ Independent rung or step

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

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

DEFINITION

Classification: 182/90

(under subclass 82) Device comprising a separate and distinct rung or step enabling a person to climb from one level to another.

SEE OR SEARCH CLASS

211, Supports: Racks,

123, for a horizontally mounted rod-type support of general utility.