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经营范围
发明名称
Warm air brooder system
摘要
申请公布号
US2938449(A)
申请公布日期
1960.05.31
申请号
US19570694244
申请日期
1957.11.04
申请人
DE BARDELEBEN COAL CORPORATION
发明人
JR. ALFRED T. NEWELL,;JR. TOLBERT N. EPPS,
分类号
A01K31/20
主分类号
A01K31/20
代理机构
代理人
主权项
地址
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