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发明名称
Sand pump
摘要
申请公布号
US1763235(A)
申请公布日期
1930.06.10
申请号
US19240757019
申请日期
1924.12.19
申请人
OTTAWA SILICA COMPANY
发明人
GYGER WAYNE B.
分类号
F04F1/00
主分类号
F04F1/00
代理机构
代理人
主权项
地址
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