US PATENT SUBCLASS 182 / 78
.~ Door operates ladder

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

77  DF  DOOR AND LADDER {1}
78.~ Door operates ladder {2}
79  DF  .~.~> Guided rigid ladder {1}
81  DF  .~.~> Door and ladder on opposite sides of wall

DEFINITION

Classification: 182/78

(under subclass 77) Device wherein the ladder and door are so related that movement of the latter causes movement of the ladder.