US PATENT SUBCLASS 138 / 142
.~.~ Brazed, soldered or welded

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}
141  DF  .~ Bonded to each other {3}
142.~.~ Brazed, soldered or welded

DEFINITION

Classification: 138/142

(under subclass 141) Device wherein the bonding means is a braze, solder or weld.