US PATENT SUBCLASS 420 / 437
.~.~ Aluminum containing

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

435  DF  COBALT BASE {1}
436  DF  .~ Chromium containing {3}
437.~.~ Aluminum containing {1}
438  DF  .~.~.~> Titanium containing

DEFINITION

Classification: 420/437

Aluminum containing:

(under subclass 436) Alloy, or metallic composition which additionally contains aluminum.