US PATENT SUBCLASS 420 / 57
.~.~.~ Molybdenum or tungsten 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}
56  DF  .~.~ Eight percent or more total nickel plus manganese containing {3}
57.~.~.~ Molybdenum or tungsten containing

DEFINITION

Classification: 420/57

Molybdenum or tungsten containing:

(under subclass 56) Alloy or metallic composition which additionally contains one or more of molybdenum or tungsten.