US PATENT SUBCLASS 285 / 290.2
.~.~ Locked reinforcement

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

285.1  DF  MOLDED JOINT {11}
290.1  DF  .~ Composite pipe (ends) {3}
290.2.~.~ Locked reinforcement

DEFINITION

Classification: 285/290.2

Locked reinforcement:

(under subclass 290.1) Subject matter wherein the structure is strengthened by imbedding hooked stay rods, which are joined together, into the conduit.