US PATENT SUBCLASS 424 / 648
.~.~.~ Ferrous

Current as of: June, 1999
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424 /   HD   DRUG, BIO-AFFECTING AND BODY TREATING COMPOSITIONS

600  DF  INORGANIC ACTIVE INGREDIENT CONTAINING {20}
617  DF  .~ Heavy metal or compound thereof {14}
646  DF  .~.~ Iron, cobalt, nickel, vanadium, molybdenum, or palladium {2}
648.~.~.~ Ferrous

DEFINITION

Classification: 424/648

Ferrous:

(under subclass 646) Compositions which contain iron in its ferrous form.

(1) Note. Synonyms/Examples: Copperas, green vitrol.