US PATENT SUBCLASS 420 / 545
.~.~.~ Chromium containing

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

528  DF  ALUMINUM BASE {7}
542  DF  .~ Magnesium containing {3}
543  DF  .~.~ Titanium, zirconium, hafnium, vanadium, niobium, or tantalum containing {2}
545.~.~.~ Chromium containing

DEFINITION

Classification: 420/545

Chromium containing:

(under subclass 543) Alloy, or metallic composition which additionally contains chromium.