US PATENT SUBCLASS 420 / 522
.~.~ Manganese, iron, cobalt, or nickel containing

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

513  DF  ZINC BASE {4}
521  DF  .~ Copper containing {1}
522.~.~ Manganese, iron, cobalt, or nickel containing

DEFINITION

Classification: 420/522

Manganese, iron, cobalt or nickel containing:

(under subclass 521) Alloy, or metallic composition which additionally contains at least one of the metals manganese, iron, cobalt, or nickel.