US PATENT SUBCLASS 182 / 153
.~ Trestle


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

152  DF  UNITARY FOLDABLE, RIGID SCAFFOLD OR LADDER {2}
153.~ Trestle {2}
154  DF  .~.~> Crossed leg
155  DF  .~.~> Legs foldable parallel to beam axis in all planes


DEFINITION

Classification: 182/153

(under subclass 152) Device wherein the device comprises a trestle which may be collapsed to facilitate its storage or transportation.

SEE OR SEARCH THIS CLASS, SUBCLASS:

105, for a pivoted ladder having a control upright section supported therebetween.