US PATENT SUBCLASS 420 / 12
.~.~.~.~ Molybdenum, tungsten or vanadium containing

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

8  DF  FERROUS (I.E., IRON BASE) {24}
9  DF  .~ 1.7 percent or more carbon containing {2}
10  DF  .~.~ Six percent or more total group IV, V or VI transition metals containing {1}
11  DF  .~.~.~ Eight percent or more chromium containing {1}
12.~.~.~.~ Molybdenum, tungsten or vanadium containing

DEFINITION

Classification: 420/12

Molybdenum, tungsten or vanadium containing:

(under subclass 11) Alloy or metallic composition which additionally contains one or more of molybdenum, tungsten or vanadium.