US PATENT SUBCLASS 182 / 39
.~ Ground- or floor-engaging

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

36  DF  TRAVERSING, TRACK-MOUNTED {3}
39.~ Ground- or floor-engaging

DEFINITION

Classification: 182/39

(under subclass 36) Device which also directly engage a floor or the ground when in use position.