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经营范围
发明名称
Sand pump
摘要
申请公布号
US2110079(A)
申请公布日期
1938.03.01
申请号
US19370136671
申请日期
1937.04.13
申请人
BUTLER CLYDE A
发明人
BUTLER CLYDE A.
分类号
F04D29/42
主分类号
F04D29/42
代理机构
代理人
主权项
地址
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