US PATENT SUBCLASS 209 / 273
.~.~ Stationary sifters


Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use



209 /   HD   CLASSIFYING, SEPARATING, AND ASSORTING SOLIDS

233  DF  SIFTING {16}
268  DF  .~ With liquid treatment {3}
273.~.~ Stationary sifters


DEFINITION

Classification: 209/273

(under subclass 268) Means and methods wherein stationary sifters are employed to sift material suspended in liquid or are associated with liquid-supply means which promote the sifting action.

SEE OR SEARCH THIS CLASS, SUBCLASS:

12.1, 13, 14, 42, and 44, for combinations of sifting with fluid suspension or stratifying separations.

454, through 457, for stratifiers employing stationary permeable beds.