US PATENT SUBCLASS 420 / 450
.~.~.~.~ Molybdenum or tungsten containing

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

441  DF  NICKEL BASE {6}
442  DF  .~ Chromium containing {5}
445  DF  .~.~ Aluminum containing {1}
446  DF  .~.~.~ Titanium containing {3}
450.~.~.~.~ Molybdenum or tungsten containing

DEFINITION

Classification: 420/450

Molybdenum or tungsten containing:

(under subclass 446) Alloy, or metallic composition additionally containing at least one of the metals molybdenum, or tungsten.