US PATENT SUBCLASS 106 / 632
.~.~ Clay containing

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

*  DD  COATING OR PLASTIC COMPOSITIONS {40}
600  DF  .~ Alkali metal silicate containing {23}
632.~.~ Clay containing

DEFINITION

Classification: 106/632

Clay containing:

(under subclass 600) Subject matter wherein clay is employed.