US PATENT SUBCLASS 420 / 441
NICKEL BASE

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

441NICKEL BASE {6}
442  DF  .~> Chromium containing {5}
455  DF  .~> Rare earth containing
456  DF  .~> Noble metal containing
457  DF  .~> Copper containing {1}
459  DF  .~> Iron or manganese containing
460  DF  .~> Aluminum containing

DEFINITION

Classification: 420/441

NICKEL BASE:

(under the class definition) Alloy, or metallic composition which contains over 50 percent of nickel.