Title:
Apparatus for separating materials
United States Patent 2491912
US Patent References:
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- - 0640400

/0976943.html
- - 0976943

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Inventors:
Walker, Marcus A.
Publication Date:
12/20/1949
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Assignee:
Walker, Marcus A.
Primary Class:
209/283
Other Classes:
209/393, 209/273, 209/172.500, 210/415, 209/173, 210/525, 210/298, 210/523, 209/464
International Classes:
B03B5/36; B03B11/00; B03B5/28
US Patent References:
1571675Grate bar for pulverizing machines
1637986Screen grate for ball mills
2353152Method of concentrating minerals