US PATENT SUBCLASS 423 / 284
.~ Nitrogen and hydrogen containing

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

276  DF  BORON OR COMPOUND THEREOF {5}
284.~ Nitrogen and hydrogen containing {1}
285  DF  .~.~> Ternary compound

DEFINITION

Classification: 423/284

(under subclass 276) Products or processes in which the compound also contains nitrogen and hydrogen.