US PATENT SUBCLASS 420 / 436
.~ Chromium containing

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

435  DF  COBALT BASE {1}
436.~ Chromium containing {3}
437  DF  .~.~> Aluminum containing {1}
439  DF  .~.~> Titanium containing
440  DF  .~.~> Iron containing

DEFINITION

Classification: 420/436

Chromium containing:

(under subclass 435) Alloy, or metallic composition which additionally contains chromium.