US PATENT SUBCLASS 420 / 418
.~ Aluminum containing

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

417  DF  TITANIUM BASE {2}
418.~ Aluminum containing {2}
419  DF  .~.~> Tin containing
420  DF  .~.~> Vanadium containing

DEFINITION

Classification: 420/418

Aluminum containing:

(under subclass 417) Alloy, or metallic composition which additionally contains aluminum.