US PATENT SUBCLASS 182 / 79
.~.~ Guided rigid ladder

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

77  DF  DOOR AND LADDER {1}
78  DF  .~ Door operates ladder {2}
79.~.~ Guided rigid ladder {1}
80  DF  .~.~.~> Guide on wall or frame

DEFINITION

Classification: 182/79

(under subclass 78) Device comprising a rigid ladder provided with a guide means.