US PATENT SUBCLASS 182 / 203
.~.~.~ Rung-engaging means
Current as of:
June, 1999
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182 /
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FIRE ESCAPE, LADDER, OR SCAFFOLD
194
DF
LADDER
{10}
200
DF
.~ Supporting surface compensating means {1}
201
DF
.~.~ Stile extension {3}
203
.~.~.~ Rung-engaging means
DEFINITION
Classification: 182/203
(under subclass 201) Device wherein said stile extension includes means engaging a rung.