US PATENT SUBCLASS 148 / 418
.~.~.~.~.~ Vanadium, niobium or tantalum containing

Current as of: June, 1999
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148 /   HD   METAL TREATMENT

400  DF  STOCK {20}
405  DF  .~ Age or precipitation hardened or strengthened {7}
415  DF  .~.~ Aluminum base {1}
416  DF  .~.~.~ Copper containing {1}
417  DF  .~.~.~.~ Magnesium containing {1}
418.~.~.~.~.~ Vanadium, niobium or tantalum containing

DEFINITION

Classification: 148/418

Vanadium, niobium or tantalum containing:

(under subclass 417) Stock material which additionally contains at least one of the metals vanadium, niobium, or tantalum.