US PATENT SUBCLASS 405 / 77
.~.~.~ With flow restrictor or ramp

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

52  DF  FLUID CONTROL, TREATMENT, OR CONTAINMENT {7}
75  DF  .~ Extracting power from moving fluid {2}
76  DF  .~.~ Wave or tide {1}
77.~.~.~ With flow restrictor or ramp

DEFINITION

Classification: 405/77

With flow restrictor or ramp:

(under subclass 76) Method or apparatus which accelerates the flow by causing it to pass through a narrowed opening or elevates the water by causing it to flow up an inclined plane.