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发明名称
Aerator
摘要
申请公布号
US2940675(A)
申请公布日期
1960.06.14
申请号
US19550550338
申请日期
1955.12.01
申请人
ROBB FRANK B
发明人
ROBB FRANK B.
分类号
E03C1/084
主分类号
E03C1/084
代理机构
代理人
主权项
地址
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