US PATENT SUBCLASS 182 / 104
PIVOTALLY CONNECTED LADDERS, MUTUALLY SUSTAINING

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

104PIVOTALLY CONNECTED LADDERS, MUTUALLY SUSTAINING {1}
105  DF  .~> Central upright ladder section supported therebetween

DEFINITION

Classification: 182/104

(under the class definition) Device including pivotally connected ladders depending on each other for support in erected position.

SEE OR SEARCH THIS CLASS, SUBCLASS:

22+, for a convertible ladder wherein a section may be pivoted from a ladder propping position to an inverted position.