US PATENT SUBCLASS 405 / 100
.~.~.~.~ About horizontal axis

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

52  DF  FLUID CONTROL, TREATMENT, OR CONTAINMENT {7}
80  DF  .~ Flow control {7}
87  DF  .~.~ Water gate or adjustable weir {7}
99  DF  .~.~.~ Swinging {1}
100.~.~.~.~ About horizontal axis {1}
101  DF  .~.~.~.~.~> Overflow {1}

DEFINITION

Classification: 405/100

About horizontal axis:

(under subclass 99) Method or apparatus wherein the water gate pivots about an axis which is generally parallel to the horizon.