US PATENT SUBCLASS 285 / 288.8
.~.~ Having crack arresting feature

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

285.1  DF  MOLDED JOINT {11}
288.1  DF  .~ Weld {8}
288.8.~.~ Having crack arresting feature

DEFINITION

Classification: 285/288.8

Having crack arresting feature:

(under subclass 288.1) Subject matter including the characteristic of relieving the strain produced by a crack.