US PATENT SUBCLASS 420 / 513
ZINC BASE

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

513ZINC BASE {4}
514  DF  .~> Aluminum containing {3}
521  DF  .~> Copper containing {1}
523  DF  .~> Cadmium containing
524  DF  .~> Tin containing

DEFINITION

Classification: 420/513

ZINC BASE:

(under the class definition) Alloy, or metallic composition which contains over 50 percent of zinc.