US PATENT SUBCLASS 405 / 104
.~.~.~.~ Vertical

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}
103  DF  .~.~.~ Sliding {1}
104.~.~.~.~ Vertical {2}
105  DF  .~.~.~.~.~> Gate unseating
106  DF  .~.~.~.~.~> With lift mechanism or latch

DEFINITION

Classification: 405/104

Vertical:

(under subclass 103) Method or apparatus wherein the movable member is raised or lowered to regulate flow there past.