US PATENT SUBCLASS 239 / 21
.~.~ With reversible feed and waste chambers

Current as of: June, 1999
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239 /   HD   FLUID SPRINKLING, SPRAYING, AND DIFFUSING

16  DF  FOUNTAINS OR DRINKING TUBES AND STRAWS {2}
17  DF  .~ Ornamental {3}
21.~.~ With reversible feed and waste chambers

DEFINITION

Classification: 239/21

(under subclass 17) Apparatus having a liquid supply chamber and a catch basin which are shiftable such that the chamber which receives the waste from the fountain in one period of its operation becomes the supply chamber for the succeeding period.