US PATENT SUBCLASS 420 / 68
.~.~.~ Titanium, zirconium or hafnium containing

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

8  DF  FERROUS (I.E., IRON BASE) {24}
34  DF  .~ Nine percent or more chromium containing {14}
67  DF  .~.~ Molybdenum or tungsten containing {2}
68.~.~.~ Titanium, zirconium or hafnium containing

DEFINITION

Classification: 420/68

Titanium, zirconium, or hafnium containing:

(under subclass 67) Alloy or metallic composition which additionally contains one or more of titanium, zirconium or hafnium..