US PATENT SUBCLASS 182 / 40
UPWARDLY EXTENSIBLE FLEXIBLE LADDER OR ESCAPE

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

40UPWARDLY EXTENSIBLE FLEXIBLE LADDER OR ESCAPE {1}
41  DF  .~> Self-rigidifying

DEFINITION

Classification: 182/40

(under the class definition) Device including a supple escape, e.g., a flexible ladder, and means on a common base therewith to upwardly extend and support said escape by rigid extensible support means or rigidifying and extending means.