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经营范围
发明名称
Poultry brooder
摘要
申请公布号
US2521480(A)
申请公布日期
1950.09.05
申请号
US19490088731
申请日期
1949.04.21
申请人
ROBERTS WILLIAM E
发明人
ROBERTS WILLIAM E.
分类号
A01K31/19
主分类号
A01K31/19
代理机构
代理人
主权项
地址
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