US PATENT SUBCLASS 52 / 175
.~ Multilevel building with ramp

Current as of: June, 1999
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52 /   HD   STATIC STRUCTURES (E.G., BUILDINGS)

174  DF  WITH TRAFFIC-GUIDING FEATURE {1}
175.~ Multilevel building with ramp {1}
176  DF  .~.~> Central ramp group

DEFINITION

Classification: 52/175

(under subclass 174) Structure wherein different levels are formed by a continuous floor which is helical in structure or wherein the different levels are interconnected by an inclined passageway.

SEE OR SEARCH THIS CLASS, SUBCLASS:

185, for a multi-level building with steps.

236.1+, for another multi-level compartmented structure.