US PATENT SUBCLASS 182 / 198
.~.~.~ Rung-attached
Current as of:
June, 1999
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182 /
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FIRE ESCAPE, LADDER, OR SCAFFOLD
194
DF
LADDER
{10}
196
DF
.~ Flexible {2}
197
DF
.~.~ With spacer {1}
198
.~.~.~ Rung-attached
DEFINITION
Classification: 182/198
(under subclass 197) Device attached to a rung.