US PATENT SUBCLASS 423 / 387
.~.~ Hydrogen containing


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

351  DF  NITROGEN OR COMPOUND THEREOF (EXCEPT AMMONIUM SALT OF NON-NITROGEN ACID) {5}
385  DF  .~ Oxygen containing {4}
387.~.~ Hydrogen containing {2}
388  DF  .~.~.~> Sulfur containing {1}
390.1  DF  .~.~.~> Nitric acid {4}


DEFINITION

Classification: 423/387

(under subclass 585) Products or processes wherein the product also contains hydrogen.