US PATENT SUBCLASS 52 / 189
.~ Precast stonelike component

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

182  DF  STEPPED; E.G., STAIR {6}
189.~ Precast stonelike component {1}
190  DF  .~.~> Integral tread and riser

DEFINITION

Classification: 52/189

(under subclass 182) Structure in which at least one part, e.g., tread, riser or stringer, of the stepped construction is made of settable material which has set to rigidity before being used at the site.

SEE OR SEARCH THIS CLASS, SUBCLASS:

600+, for a reinforced cast module.