US PATENT SUBCLASS 182 / 225
.~ Relatively movable

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

224  DF  SCAFFOLD HORSE BEAM OR LEG {1}
225.~ Relatively movable {2}
226  DF  .~.~> Beam clamped by pivoting leg
227  DF  .~.~> With intermediate staff

DEFINITION

Classification: 182/225

(under subclass 224) Device wherein a joint provides for relative movement between two components.