US PATENT SUBCLASS 428 / 647
.~.~.~ Next to Group IB metal-base component

Current as of: June, 1999
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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}
646  DF  .~.~ Sn-base component {2}
647.~.~.~ Next to Group IB metal-base component

DEFINITION

Classification: 428/647

(under subclass 646) Subject matter in which the tin-base component is adjacent a component having 40 percent or more of copper, gold and/or silver.

(1) Note. Patents in this subclass are not cross-referenced to subclasses 671, 672, 673, or 674+ on the basis of the Sn/Group IB-metal interface.

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643, and/or 644, to complete this search.