US PATENT SUBCLASS 405 / 91
.~.~.~.~ Flexible

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}
90  DF  .~.~.~ Removable {1}
91.~.~.~.~ Flexible

DEFINITION

Classification: 405/91

Flexible:

(under subclass 90) Method or apparatus wherein the removable gate is composed of a pliant material.