US PATENT SUBCLASS 209 / 206
.~.~.~.~.~ Riffles and traps

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

132  DF  FLUID SUSPENSION {2}
155  DF  .~ Liquid {5}
162  DF  .~.~ Floating {3}
172  DF  .~.~.~ Gravity liquid {3}
174  DF  .~.~.~.~ Metallic (i.e., amalgamators) {6}
206.~.~.~.~.~ Riffles and traps

DEFINITION

Classification: 209/206

(under subclass 174) Devices for retaining or collecting liquid metal that is employed to separate components of a mixture of solids.