US PATENT SUBCLASS 106 / 737
.~.~.~ Silica containing (e.g., sand, quartz, etc.)
Current as of:
June, 1999
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106 /
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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.
