US PATENT SUBCLASS 252 / 62.58
.~.~ With boron, aluminum, thallium, or indium

Current as of: June, 1999
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252 /   HD   COMPOSITIONS

62.51 R  DF  MAGNETIC {5}
62.56  DF  .~ Iron-oxygen compound containing {5}
62.58.~.~ With boron, aluminum, thallium, or indium

DEFINITION

Classification: 252/62.58

(under subclass 62.56) Compositions containing boron in any form or aluminum, thallium, or indium in chemically combined form.