US PATENT SUBCLASS 264 / 256
.~.~.~.~ Utilizing clay, sand, or calcareous slurry

Current as of: June, 1999
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264 /   HD   PLASTIC AND NONMETALLIC ARTICLE SHAPING OR TREATING: PROCESSES

239  DF  MECHANICAL SHAPING OR MOLDING TO FORM OR REFORM SHAPED ARTICLE {10}
241  DF  .~ To produce composite, plural part or multilayered article {9}
250  DF  .~.~ By separately molding different article portions {3}
255  DF  .~.~.~ Sequential formation of portion on same mold or a preform surface {1}
256.~.~.~.~ Utilizing clay, sand, or calcareous slurry

DEFINITION

Classification: 264/256

(under subclass 255) Processes wherein a layer is comprised of a material which is in whole or part siliceous, argillaceous, arenaceous, calcarious or is formed substantially of a similar, common soil forming substituent.