US PATENT SUBCLASS 405 / 178
.~.~ Simultaneous laying of plural parallel pipes or cables

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}
174  DF  .~ By means advancing along terrain and guiding pipe or cable into subterranean position {6}
178.~.~ Simultaneous laying of plural parallel pipes or cables

DEFINITION

Classification: 405/178

Simultaneous laying of plural parallel pipes or cables:

(under subclass 174) Methods or apparatus relating to the concurrent placement of two or more parallel strings or conduits below the earth surface.