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发明名称
Calf weaner
摘要
申请公布号
US2252894(A)
申请公布日期
1941.08.19
申请号
US19400313964
申请日期
1940.01.15
申请人
MARTIN JOHN T
发明人
MARTIN JOHN T.
分类号
A01K19/00
主分类号
A01K19/00
代理机构
代理人
主权项
地址
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