US PATENT SUBCLASS 423 / 256
.~.~.~ Carbon containing

Current as of: June, 1999
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423 /   HD   CHEMISTRY OF INORGANIC COMPOUNDS

249  DF  RADIOACTIVE (AT. NO. 84+ OR RADIOACTIVE ISOTOPE OF ANOTHER ELEMENT) {3}
253  DF  .~ Uranium compound {1}
254  DF  .~.~ Binary compound {5}
256.~.~.~ Carbon containing

DEFINITION

Classification: 423/256

(under subclass 254) Products or processes in which the other element is carbon.