US PATENT SUBCLASS 52 / 309.12
.~.~.~ Cementitious material

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

309.1  DF  WITH SYNTHETIC RESINOUS COMPONENT {4}
309.4  DF  .~ Foam {4}
309.8  DF  .~.~ Adjacent nonporous layer {2}
309.12.~.~.~ Cementitious material

DEFINITION

Classification: 52/309.12

(under subclass 309.8) Structure wherein the nonfoam-like component is a hydraulic, cementitious material, e.g., concrete.