US PATENT SUBCLASS 420 / 128
.~ Nitrogen containinig

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

8  DF  FERROUS (I.E., IRON BASE) {24}
128.~ Nitrogen containinig

DEFINITION

Classification: 420/128

Nitrogen containing:

(under subclass 8) Alloy or metallic composition which additionally contains nitrogen.