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


Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use



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..