US PATENT SUBCLASS 420 / 475
.~.~.~ Zinc containing

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

469  DF  COPPER BASE {15}
470  DF  .~ Tin containing {5}
474  DF  .~.~ Lead containing {1}
475.~.~.~ Zinc containing

DEFINITION

Classification: 420/475

Zinc containing:

(under subclass 474) Alloy, or metallic composition which additionally contains zinc.