US PATENT SUBCLASS 138 / 146
.~.~ Diverse coating material

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

140  DF  DISTINCT LAYERS {8}
145  DF  .~ Coated {1}
146.~.~ Diverse coating material

DEFINITION

Classification: 138/146

(under subclass 145) Device wherein at least one coated layer is of a material different from the material of another coated layer.

SEE OR SEARCH THIS CLASS, SUBCLASS:

129+, for flexible pipe spirally wound.