US PATENT SUBCLASS 285 / FOR 131
.~ Plural layer pipe (285/149)

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

FOR 100  DF  SYSTEMS (285/120) {11}
FOR 131.~ Plural layer pipe (285/149)

DEFINITION

Classification: 285/FOR.131

Foreign art collection wherein a pipe comprising several layers is joined to a connector member and at least two of the layers are separately connected to or independently gripped by the connector member.