US PATENT SUBCLASS 420 / 464
.~ Copper containing

Current as of: June, 1999
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420 /   HD   ALLOYS OR METALLIC COMPOSITIONS

463  DF  PALLADIUM BASE {2}
464.~ Copper containing

DEFINITION

Classification: 420/464

Copper containing:

(under subclass 463) Alloy, or metallic composition which additionally contains copper.