US PATENT SUBCLASS 405 / 73
.~ Erosive scouring

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

52  DF  FLUID CONTROL, TREATMENT, OR CONTAINMENT {7}
73.~ Erosive scouring

DEFINITION

Classification: 405/73

Erosive scouring:

(under subclass 52) Method or apparatus relating to the removal or a sediment deposit by the concentration of a natural current.