US PATENT SUBCLASS 420 / 37
.~.~.~ 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}
36  DF  .~.~ Cobalt containing {1}
37.~.~.~ Molybdenum or tungsten containing {2}
38  DF  .~.~.~.~> Nickel containing
39  DF  .~.~.~.~> Copper containing

DEFINITION

Classification: 420/37

Molybdenum or tungsten containing:

(under subclass 36) Alloy or metallic composition which additionally contains at least one of molybdenum or tungsten.