US PATENT SUBCLASS 420 / 567
.~ Arsenic containing

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

563  DF  LEAD BASE {8}
567.~ Arsenic containing {1}
568  DF  .~.~> Tin containing {1}

DEFINITION

Classification: 420/567

Arsenic containing:

(under subclass 563) Alloy, or metallic composition which additionally contains arsenic.