US PATENT SUBCLASS 210 / 256
.~ One unit inside another

Current as of: June, 1999
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210 /   HD   LIQUID PURIFICATION OR SEPARATION

252  DF  SERIALLY CONNECTED DISTINCT TREATING WITH OR WITHOUT STORAGE UNITS {7}
256.~ One unit inside another

DEFINITION

Classification: 210/256

(under subclass 252) Apparatus in which one unit is within another.

SEE OR SEARCH THIS CLASS, SUBCLASS:

207+, for a distinct reactor, tank trough or compartment within a gravitational separator.

315, for a diverse spaced filter within another.

337+, for nested distinct separators in series.

342, for one separator within another.