Watering device for laying cages
United States Patent 2212549

Inventors:
Olson, John B.
Markey, George T.
Publication Date:
08/27/1940
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Assignee:
JAMES MFG CO
Primary Class:
119/457
Other Classes:
15/104.050, 119/74, D30/116
International Classes:
A01K39/02; A01K39/00