US PATENT SUBCLASS 182 / 194
LADDER

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

194LADDER {10}
195  DF  .~> Slidable nested single rung units
196  DF  .~> Flexible {2}
200  DF  .~> Supporting surface compensating means {1}
206  DF  .~> With hook or grab
207  DF  .~> Extension {2}
214  DF  .~> With spacer means
215  DF  .~> Rung sandwiched between elements of composite stile
216  DF  .~> Tie rod assembled
217  DF  .~> With reinforcing means {2}
220  DF  .~> Independent support for rung

DEFINITION

Classification: 182/194

(under the class definition) Device composed of a stile having a plurality of rungs or steps mounted therebetween along the length thereof.

SEE OR SEARCH THIS CLASS, SUBCLASS:

189+, for a single stile ladder.

SEE OR SEARCH CLASS

52, Static Structures (e.g., Buildings),

182+, for a stair with risers and specifically defined in situ erected type building structure with an attached stair or ladder.

105, Railway Rolling Stock, 443+, for steps on railroad rolling stock involving modified vehicle structure.

280, Land Vehicles,

163+, for steps on a land vehicle.