US PATENT SUBCLASS 71 / 23
.~.~ From vegetation

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

1  DF  PROCESSES AND PRODUCTS {5}
11  DF  .~ Organic material-containing {6}
23.~.~ From vegetation {1}
24  DF  .~.~.~> Peat, humus material, coal, etc.

DEFINITION

Classification: 71/23

(under subclass 11) Processes and products, of preparing fertilizers from vegetable material; other organic values such as classified hereinbelow may also be present.