Charging mechanism for aerators and the like
United States Patent 2336708

Inventors:
Ward, Lawrence T.
Publication Date:
12/14/1943
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Assignee:
KNAPP MONARCH CO
Primary Class:
261/121.100
Other Classes:
239/DIG.011, 116/DIG.044, 141/17, 222/5
International Classes:
B01F3/04