US PATENT SUBCLASS 285 / 290.5
.~.~ Expansion/contraction


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}
290.5.~.~ Expansion/contraction


DEFINITION

Classification: 285/290.5

Expansion/contraction:

(under subclass 290.1) Subject matter wherein the joint is water-tight and constructed to provide for inordinate expansion or contraction and remain water-tight.