US PATENT SUBCLASS 106 / 721
.~.~.~.~ Silica or lime added

Current as of: June, 1999
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106 /   HD   COMPOSITIONS: COATING OR PLASTIC

*  DD  COATING OR PLASTIC COMPOSITIONS {40}
638  DF  .~ Inorganic settable ingredient containing {30}
713  DF  .~.~ Portland type cement {13}
718  DF  .~.~.~ Soil, diatomaceous earth, clay, slate or shale, containing or material for treating soil or earth (e.g., soil stabilization, etc.) {3}
721.~.~.~.~ Silica or lime added

DEFINITION

Classification: 106/721

Silica or lime added:

(under subclass 718) Subject matter wherein the composition contains lime or silica in addition to that contained in the portland cement, per se.