US PATENT SUBCLASS 428 / 644
.~.~.~ And next to Cu- or Fe-base component

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

Internet Version by PATENTEC © 1999      Terms of Use


428 /   HD   STOCK MATERIAL OR MISCELLANEOUS ARTICLES

544  DF  ALL METAL OR WITH ADJACENT METALS {31}
615  DF  .~ Composite; i.e., plural, adjacent, spatially distinct metal components (e.g., layers, joint, etc.) {15}
643  DF  .~.~ Pb- and Sn-base components: alternative to or next to each other* {1}
644.~.~.~ And next to Cu- or Fe-base component

DEFINITION

Classification: 428/644

(under subclass 643) Subject matter in which a lead- or tin-base component is adjacent a component having 40 percent or more of copper or iron, or a combination of the two.

(1) Note. Patents in this subclass are not cross-referenced to subclasses 674 and 681+ on the basis of the Pb-Sn/Cu-Fe interface.