Title:
Concentration of minerals
United States Patent 2758714
US Patent References:
/1167835.html
- - 1167835

Aerating device
- - 1920719

Separation of materials
- - 2176107


Inventors:
Hollingsworth, Clinton A.
Publication Date:
08/14/1956
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Assignee:
SMITH DOUGLAS COMPANY INC
Primary Class:
209/168
Other Classes:
209/170
International Classes:
B03D1/26; B03D1/14