US PATENT SUBCLASS 420 / 62
.~.~ Over 0.1 percent aluminum containing

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

8  DF  FERROUS (I.E., IRON BASE) {24}
34  DF  .~ Nine percent or more chromium containing {14}
62.~.~ Over 0.1 percent aluminum containing {1}
63  DF  .~.~.~> Molybdenum or tungsten conaining

DEFINITION

Classification: 420/62

Over 0.1 percent aluminium containing:

(under subclass 34) Alloy or metallic composition which additionally contains more than 0.1 percent aluminum.