US PATENT SUBCLASS 71 / 50
.~.~.~.~.~.~ Nitrates

Current as of: June, 1999
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71 /   HD   CHEMISTRY: FERTILIZERS

1  DF  PROCESSES AND PRODUCTS {5}
31  DF  .~ Inorganic material {5}
32  DF  .~.~ Phosphorus-containing {1}
33  DF  .~.~.~ Phosphates {6}
48  DF  .~.~.~.~ Products {4}
49  DF  .~.~.~.~.~ Nitrogen-containing {1}
50.~.~.~.~.~.~ Nitrates

DEFINITION

Classification: 71/50

(under subclass 42) Products which contain also inorganic nitrates.

SEE OR SEARCH THIS CLASS, SUBCLASS:

33, 37-47, for processes.