US PATENT SUBCLASS 420 / 492
.~ Titanium, zirconium or hafnium containing

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

469  DF  COPPER BASE {15}
492.~ Titanium, zirconium or hafnium containing

DEFINITION

Classification: 420/492

Titanium, zirconium or hafnium containing:

(under subclass 469) Alloys, or metallic composition which additionally contains at least one of the metals titanium, zirconium, or hafnium.