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发明名称
Valved aeration device
摘要
申请公布号
US2715609(A)
申请公布日期
1955.08.16
申请号
US19510247619
申请日期
1951.09.21
申请人
HANSEN THORWALD H
发明人
HANSEN THORWALD H.
分类号
A01K63/04
主分类号
A01K63/04
代理机构
代理人
主权项
地址
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