US PATENT SUBCLASS 420 / 528
ALUMINUM BASE

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

528ALUMINUM BASE {7}
529  DF  .~> Copper containing {6}
540  DF  .~> Zinc containing {1}
542  DF  .~> Magnesium containing {3}
548  DF  .~> Silicon containing {1}
550  DF  .~> Iron, cobalt, or nickel containing {1}
552  DF  .~> Titanium, zirconium, hafnium, vanadium, niobium, or tantalum containing {1}
554  DF  .~> Cadmium, lead, or bismuth containing

DEFINITION

Classification: 420/528

ALUMINUM BASE:

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