US PATENT SUBCLASS 420 / 452
.~.~ Iron or manganese containing

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

441  DF  NICKEL BASE {6}
442  DF  .~ Chromium containing {5}
452.~.~ Iron or manganese containing {1}
453  DF  .~.~.~> Molybdenum or tungsten containing {1}

DEFINITION

Classification: 420/452

Iron or manganese containing:

(under subclass 442) Alloy, or metallic composition which additionally contains at least one of the metals iron, or manganese.