US PATENT SUBCLASS 405 / 6
.~.~ Gate

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

1  DF  MARINE VESSEL PORTAGE, LAUNCHING, OR REMOVING {3}
4  DF  .~ Dry dock {3}
6.~.~ Gate

DEFINITION

Classification: 405/6

Gate:

(under subclass 4) Method or apparatus for sealing the entrance into the basin through which the vessel passes.

SEE OR SEARCH THIS CLASS, SUBCLASS:

85+, for locks associated with navigable canals.

87+, for water gates associated with other open topped waterways.