US PATENT SUBCLASS 148 / 302
.~.~.~ Boron containing

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

400  DF  STOCK {20}
300  DF  .~ Magnetic {7}
301  DF  .~.~ Rare earth and transition metal containing {2}
302.~.~.~ Boron containing

DEFINITION

Classification: 148/302

Boron containing:

(under subclass 301) Stock material which additionally contains boron.