Apparatus for pulverizing and classifying materials
United States Patent 2304264

Inventors:
Lykken, Henry G.
Publication Date:
12/08/1942
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Assignee:
Lykken, Henry G.
Primary Class:
241/39
Other Classes:
209/139.200, 241/275, 241/56, 241/53, 241/52, 209/714, 209/154
International Classes:
B02C23/00