US PATENT SUBCLASS 182 / 109
.~.~ Diverse ground-engaging means

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

107  DF  SAFETY DEVICE FOR GROUND-SUPPORTED LADDER {1}
108  DF  .~ Terminal foot or shoe {3}
109.~.~ Diverse ground-engaging means

DEFINITION

Classification: 182/109

(under subclass 108) Device comprising different kinds of antislip means, e.g., a pad and a spike.