Process for the preparation of finely divided ferromagnetic ferric oxide
United States Patent 2950955

Inventors:
Ernst, Wagner
Publication Date:
08/30/1960
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Assignee:
Degussa
Primary Class:
Other Classes:
423/152
International Classes:
C01G49/06; G11B5/706; C01G49/02
Foreign References:
GB677878A
GB726250A