Title:
Dry-cleaning of large or small coal or other particulate materials containing components of different specific gravities
United States Patent 3367501


Inventors:
Frank, Eveson Geoffrey
Application Number:
US44818565A
Publication Date:
02/06/1968
Filing Date:
04/14/1965
Assignee:
HEAD WRIGHTSON & CO LTD
Primary Class:
Other Classes:
209/466, 209/492, 209/493
International Classes:
B03B4/02; B03B5/46
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