US PATENT SUBCLASS 405 / 136
.~ Subaqueous

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

132  DF  UNDERGROUND PASSAGEWAY, E.G., TUNNEL {6}
136.~ Subaqueous {1}
137  DF  .~.~> Below bed

DEFINITION

Classification: 405/136

Subaqueous:

(under subclass 132) Method or apparatus wherein the tunnel

is located beneath the surface of a body of water.

SEE OR SEARCH THIS CLASS, SUBCLASS:

158+, for subaqueous placement of a pipeline or cable.