US PATENT SUBCLASS 405 / 41
.~.~.~ Riser or standpipe outlet or intake

Current as of: June, 1999
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405 /   HD   HYDRAULIC AND EARTH ENGINEERING

36  DF  DRAINAGE OR IRRIGATION {7}
39  DF  .~ Having regulation of flow through channel {1}
40  DF  .~.~ At outlet or intake {1}
41.~.~.~ Riser or standpipe outlet or intake

DEFINITION

Classification: 405/41

Riser or standpipe outlet or intake:

(under subclass 40) Method or apparatus wherein the point of egress or ingress is in a pipe which projects upwardly, usually perpendicularly from a main pipe.