US PATENT SUBCLASS 405 / 85
.~.~.~ Having lock

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}
84  DF  .~.~ Navigable canal {1}
85.~.~.~ Having lock {1}
86  DF  .~.~.~.~> Movable lifting member

DEFINITION

Classification: 405/85

Having lock:

(under subclass 84) Method or apparatus for shifting a vessel from one level to another in a canal.