US PATENT SUBCLASS 182 / 80
.~.~.~ Guide on wall or frame

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  DF  .~.~ Guided rigid ladder {1}
80.~.~.~ Guide on wall or frame

DEFINITION

Classification: 182/80

(under subclass 79) Device in which a guide is mounted on or near the door frame.