US PATENT SUBCLASS 182 / 94
.~.~ Wall penetrating operating means

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

82  DF  WALL- OR FLOOR-ATTACHED {7}
93  DF  .~ Ladder {4}
94.~.~ Wall penetrating operating means

DEFINITION

Classification: 182/94

(under subclass 93) Device with which there is associated a wall penetrating actuating or operating means to effect the collapsing the ladder structure.