US PATENT SUBCLASS 285 / 290.1
.~ Composite pipe (ends)

Current as of: June, 1999
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285 /   HD   PIPE JOINTS OR COUPLINGS

285.1  DF  MOLDED JOINT {11}
290.1.~ Composite pipe (ends) {3}
290.2  DF  .~.~> Locked reinforcement
290.3  DF  .~.~> Interlocked with pipe end {1}
290.5  DF  .~.~> Expansion/contraction

DEFINITION

Classification: 285/290.1

Composite pipe (ends):

(under subclass 285.1) Subject matter in which at least the ends of the members to be joined are of a composite material, such as cement, asphalt, concrete, or glass combined with other materials such as reinforcement.

SEE OR SEARCH CLASS

138, Pipes and Tubular Conduits,

140+, for pipe structure, per se.