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

DEFINITION

Classification: 420/454

Cobalt containing:

(under subclass 453) Alloy, or metallic composition which additionally contains cobalt.