US PATENT SUBCLASS 138 / 152
.~.~ Material of one layer passing through seam


Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use



138 /   HD   PIPES AND TUBULAR CONDUITS

140  DF  DISTINCT LAYERS {8}
151  DF  .~ With longitudinal seam {1}
152.~.~ Material of one layer passing through seam


DEFINITION

Classification: 138/152

(under subclass 151) Device wherein the edges of at least one layer are spaced from each other and another layer has a part thereof extending into said space.