US PATENT SUBCLASS 138 / 136
.~.~.~.~ Packed or sealed

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  DF  .~.~ Metal {1}
135  DF  .~.~.~ With interlocked or clamped edge {1}
136.~.~.~.~ Packed or sealed

DEFINITION

Classification: 138/136

(under subclass 135) Device having a packing or sealing material between the interlocked or clamped edges.