US PATENT SUBCLASS 420 / 406
.~.~ Zirconium containing

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

402  DF  MAGNESIUM BASE {6}
405  DF  .~ Lanthanide containing {1}
406.~.~ Zirconium containing

DEFINITION

Classification: 420/406

Zirconium containing:

(under subclass 405) Alloy, or metallic composition additionally containing zirconium.