US PATENT SUBCLASS 182 / 121
.~.~.~ Plural rung-engaging


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

115  DF  LADDER AND PLATFORM {1}
116  DF  .~ Platform with ladder as support {6}
120  DF  .~.~ Detachable step, single ladder {1}
121.~.~.~ Plural rung-engaging {1}
122  DF  .~.~.~.~> Stile-contacting


DEFINITION

Classification: 182/121

(under subclass 120) Device in which the step or platform is attached to or engages a plurality of rungs of the ladder.