US PATENT SUBCLASS 138 / 155
JOINED SECTIONS

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

155JOINED SECTIONS

DEFINITION

Classification: 138/155

(under the class definition) Device wherein the pipe wall is made up of short tubular sections which are rigidly joined to each other.

SEE OR SEARCH CLASS

285, Pipe Joints or Couplings, appropriate subclasses, for similar structure involving in the joint the internal wall structure of the tube.