US PATENT SUBCLASS 119 / 530
.~.~.~ Floor, per se, having drain openings or passages (e.g., one piece floor having openings formed therein, etc.)

Current as of: June, 1999
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119 /   HD   ANIMAL HUSBANDRY

416  DF  CONFINING OR HOUSING {11}
516  DF  .~ Stall {9}
525  DF  .~.~ Floor {5}
530.~.~.~ Floor, per se, having drain openings or passages (e.g., one piece floor having openings formed therein, etc.)

DEFINITION

Classification: 119/530

Floor, per se, having drain openings or passages (e.g., one-piece floor having openings formed therein, etc.):

(under subclass 525) Subject matter including a floor that is either initially formed or has formed therein surface interruptions or channels for flowable animal waste to pass through.