US PATENT SUBCLASS 420 / 76
.~.~ Copper containing


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

8  DF  FERROUS (I.E., IRON BASE) {24}
72  DF  .~ Eight percent or more manganese containing {4}
76.~.~ Copper containing


DEFINITION

Classification: 420/76

Copper containing:

(under subclass 72) Alloy or metallic composition which additionally contains copper.