US PATENT SUBCLASS 420 / 117
.~ Two percent or more 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}
117.~ Two percent or more silicon containing {1}
118  DF  .~.~> Titanium, molybdenum, tungsten or vanadium containing

DEFINITION

Classification: 420/117

Two percent or more silicon containing:

(under subclass 8) Alloy or metallic composition which additionally contains 2 percent or more silicon.