US PATENT SUBCLASS 182 / 180.3
.~.~.~ Vertically pivoted to supporting base

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

179.1  DF  SELF-SUSTAINING {5}
180.1  DF  .~ Ladder {1}
180.2  DF  .~.~ Having supporting base {1}
180.3.~.~.~ Vertically pivoted to supporting base

DEFINITION

Classification: 182/180.3

Vertically pivoted to supporting base:

(under subclass 180.2) Device wherein the ladder is movable relative to the supporting base and rotates about a horizontal axis.