US PATENT SUBCLASS 138 / 134
.~.~ Metal

Current as of: June, 1999
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138 /   HD   PIPES AND TUBULAR CONDUITS

118  DF  FLEXIBLE {8}
129  DF  .~ Spirally wound material {4}
134.~.~ Metal {1}
135  DF  .~.~.~> With interlocked or clamped edge {1}

DEFINITION

Classification: 138/134

(under subclass 129) Device comprising metal.

SEE OR SEARCH THIS CLASS, SUBCLASS:

127, for distinct layer with metal.

131, for a metal core.

133, for embedded metal.