US PATENT SUBCLASS 148 / 331
.~.~ Rare earth meal containing

Current as of: June, 1999
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148 /   HD   METAL TREATMENT

400  DF  STOCK {20}
320  DF  .~ Ferrous (i.e., iron base) {10}
331.~.~ Rare earth meal containing

DEFINITION

Classification: 148/331

Rare earth metal containing:

(under subclass 320) Stock material which additionally contains scandium, yttrium or a lanthanide metal.