US PATENT SUBCLASS 285 / 423
.~ Nonmetallic

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

422  DF  MATERIALS {2}
423.~ Nonmetallic

DEFINITION

Classification: 285/423

(under subclass 422) Subject matter which includes a synthetic resin or other nonmetallic material.

SEE OR SEARCH THIS CLASS, SUBCLASS:

238+, for nonmetal to metal joints.