US PATENT SUBCLASS 138 / 128
.~ Longitudinally seamed

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

118  DF  FLEXIBLE {8}
128.~ Longitudinally seamed

DEFINITION

Classification: 138/128

(under subclass 118) Device having a longitudinally extending

seam therein.

SEE OR SEARCH CLASS

156, Adhesive Bonding and Miscellaneous Chemical Manufacture,

203, and 466 for forming tubes, etc., by longitudinally bending a web to form a tube and laminating the edges.