Title:
Ore stratifying and concentrating means
United States Patent 2661843


Inventors:
Ralph, Sparks
Application Number:
US22430851A
Publication Date:
12/08/1953
Filing Date:
05/03/1951
Assignee:
Ralph, Sparks
Primary Class:
Other Classes:
209/479, 209/493, 209/504, 209/508
International Classes:
B03B5/04
View Patent Images:
US Patent References:
2211000Screening apparatus1940-08-13
1512701Process for treating coal or other mineral and apparatus therefor1924-10-21
1512204Amalgamator and concentrator1924-10-21
1327902Concentrator1920-01-13
1252273N/A1918-01-01
1068162N/A1913-07-22
1049217N/A1912-12-31
0650138N/A1900-05-22
Foreign References:
GB311310A1929-05-09