US PATENT SUBCLASS 285 / 288.11
.~.~ Having pre-formed weld ring

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}
288.11.~.~ Having pre-formed weld ring

DEFINITION

Classification: 285/288.11

Having pre-formed weld ring:

(under subclass 288.1) Subject matter including placement of a pre-shaped ring along which a welding bead is laid.