US PATENT SUBCLASS 182 / 77
DOOR AND LADDER

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

77DOOR AND LADDER {1}
78  DF  .~> Door operates ladder {2}

DEFINITION

Classification: 182/77

(under the class definition) Device wherein a ladder is associated with a door.