US PATENT SUBCLASS 420 / 403
.~ Silver containing

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

402  DF  MAGNESIUM BASE {6}
403.~ Silver containing {1}
404  DF  .~.~> Manganese containing

DEFINITION

Classification: 420/403

Silver containing:

(under subclass 402) Alloy, or metallic composition which additionally contains silver.