US PATENT SUBCLASS 420 / 453
.~.~.~ Molybdenum or tungsten 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  DF  .~.~ Iron or manganese containing {1}
453.~.~.~ Molybdenum or tungsten containing {1}
454  DF  .~.~.~.~> Cobalt containing

DEFINITION

Classification: 420/453

Molybdenum or tungsten containing:

(under subclass 452) Alloy, or metallic composition which additionally contains at least one of the metals molybdenum, or tungsten.