(under subclass 140) Device wherein the pipe has one or more layers of material deposited thereon.
SEE OR SEARCH THIS CLASS, SUBCLASS:
127, for flexible distinct layer pipe including metal.
134, for flexible, spirally wound, metal pipe.
SEE OR SEARCH CLASS
106, Compositions: Coating or Plastic, appropriate subclasses for plastic coating composition.
148, Metal Treatment, 400+, for a nominal pipe made of metallic stock material appropriate to that subclass, e.g., heat reheated, etc.
420, Alloys or Metallic Compositions, appropriate subclasses for a nominal pipe claimed in terms of the alloy or metallic composition from which it is made.
