US PATENT SUBCLASS 420 / 553
.~.~ Manganese containing

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

528  DF  ALUMINUM BASE {7}
552  DF  .~ Titanium, zirconium, hafnium, vanadium, niobium, or tantalum containing {1}
553.~.~ Manganese containing

DEFINITION

Classification: 420/553

Manganese containing:

(under subclass 552) Alloy, or metallic composition which additionally contains manganese.