US PATENT SUBCLASS 405 / 159
.~.~ Entrenched or buried

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

154  DF  PIPE OR CABLE LAYING, RETRIEVING, OR UNDERWATER MANIPULATION {6}
158  DF  .~ Submerging, raising, or manipulating line of pipe or cable in or from marine environment {7}
159.~.~ Entrenched or buried {3}
160  DF  .~.~.~> Condition responsive
161  DF  .~.~.~> Entrenching or burying apparatus guided by pre-positioned pipe or cable {2}
164  DF  .~.~.~> By towing submerged sled with attached plow and pipe or cable guide {1}

DEFINITION

Classification: 405/159

Entrenched or buried:

(under subclass 158) Method or apparatus wherein the string or conduit is positioned beneath the bottom earth surface of the body of water.

SEE OR SEARCH CLASS

37, Excavating,

307+, for dredgers for excavating beneath a body or water.

175, Boring or Penetrating the Earth,

5+, for subject matter relating to boring a submerged formation.