US PATENT SUBCLASS 420 / 495
.~ Other refractory metal containing

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

469  DF  COPPER BASE {15}
495.~ Other refractory metal containing

DEFINITION

Classification: 420/495

Other refractory metal containing:

(under subclass 469) Alloy, or metallic composition which additionally contains at least one of the metals vanadium, chromium, niobium, molybdenum, tantalum, or tungsten.