US PATENT SUBCLASS 138 / 124
.~.~ Distinct layers

Current as of: June, 1999
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138 /   HD   PIPES AND TUBULAR CONDUITS

118  DF  FLEXIBLE {8}
123  DF  .~ Braided, interlaced, knitted or woven {1}
124.~.~ Distinct layers {1}
125  DF  .~.~.~> Plastic {1}

DEFINITION

Classification: 138/124

(under subclass 123) Device wherein there is more than one layer in the pipe wall make-up.

SEE OR SEARCH THIS CLASS, SUBCLASS:

101, for distinct layer break-joint pipe.