US PATENT SUBCLASS 423 / 644
HYDROGEN OR COMPOUND THEREOF

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

644HYDROGEN OR COMPOUND THEREOF {3}
645  DF  .~> Binary compound {2}
647.7  DF  .~> Deuterium-containing
648.1  DF  .~> Elemental hydrogen {6}

DEFINITION

Classification: 423/644

(under the class definition) Products or processes wherein the product is hydrogen or a compound thereof.