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

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


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.