US PATENT SUBCLASS 252 / 62.63
.~.~.~ Calcium, barium, strontium, or lead

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}
62.62  DF  .~.~ With Group II metal or lead {2}
62.63.~.~.~ Calcium, barium, strontium, or lead

DEFINITION

Classification: 252/62.63

(under subclass 62.62) Compositions containing calcium, barium, strontium or lead.