US PATENT SUBCLASS 106 / 737
.~.~.~ Silica containing (e.g., sand, quartz, etc.)


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}
737.~.~.~ Silica containing (e.g., sand, quartz, etc.)


DEFINITION

Classification: 106/737

Silica containing (e.g., sand, quartz, etc.):

(under subclass 713) Subject matter wherein the composition contains added silica other than the silica of the portland cement, per se, e.g., sand quartz, etc.