US PATENT SUBCLASS 420 / 448
.~.~.~.~.~ 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}
447  DF  .~.~.~.~ Tantalum, niobium, vanadium, or hafnium containing {1}
448.~.~.~.~.~ Molybdenum or tungsten containing

DEFINITION

Classification: 420/448

Molybdenum or tungsten containing:

(under subclass 447) Alloy, or metallic composition which additionally contains at least one of the metals molybdenum, or tungsten.