US PATENT SUBCLASS 209 / 57
.~.~.~.~ Percolators

Current as of: June, 1999
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209 /   HD   CLASSIFYING, SEPARATING, AND ASSORTING SOLIDS

45  DF  ADHESION {2}
49  DF  .~ Coated surface or mass {1}
50  DF  .~.~ Mercurial {3}
52  DF  .~.~.~ Contact elements {5}
57.~.~.~.~ Percolators

DEFINITION

Classification: 209/57

(under subclass 52) Elements forming a multiplicity of narrow passages for the material, are coated with mercury or its equivalent to collect certain of the components of the mixture.