US PATENT SUBCLASS 420 / 546
.~.~ Silicon containing

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

528  DF  ALUMINUM BASE {7}
542  DF  .~ Magnesium containing {3}
546.~.~ Silicon containing

DEFINITION

Classification: 420/546

Silicon containing:

(under subclass 542) Alloy, or metallic composition which additionally contains silicon.