US PATENT SUBCLASS 405 / 48
.~.~ Open seam or shielded outlet

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

36  DF  DRAINAGE OR IRRIGATION {7}
43  DF  .~ Porous or apertured pipe, flume, or tileway {6}
48.~.~ Open seam or shielded outlet

DEFINITION

Classification: 405/48

Open seam or shielded outlet:

(under subclass 43) Method or apparatus wherein (a) the water-conducting member is a generally closed channel which has longitudinally extending juncture formed therein in which an exit or entrance passage is provided, or (b) the exit or entrance passage is provided with means overhanging the passage to preclude the entry of dirt, soil, or like clogging material.