US PATENT SUBCLASS 420 / 515
.~.~ Copper containing


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

513  DF  ZINC BASE {4}
514  DF  .~ Aluminum containing {3}
515.~.~ Copper containing {3}
516  DF  .~.~.~> Mangesium containing
517  DF  .~.~.~> Tin containing
518  DF  .~.~.~> Manganese, iron, cobalt, or nickel containing


DEFINITION

Classification: 420/515

Copper containing:

(under subclass 514) Alloy, or metallic composition which additionally contains copper.