US PATENT SUBCLASS 420 / 98
.~.~ Over 1 percent silicon containing

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

8  DF  FERROUS (I.E., IRON BASE) {24}
94  DF  .~ Over 10 percent nickel containing {4}
98.~.~ Over 1 percent silicon containing

DEFINITION

Classification: 420/98

Over 1 percent silicon containing:

(under subclass 94) Alloy or metallic composition which additionally contains more that 1 percent.