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经营范围
发明名称
Pumping apparatus
摘要
申请公布号
US1744087(A)
申请公布日期
1930.01.21
申请号
US19270161517
申请日期
1927.01.17
申请人
WATTS ELMER A
发明人
WATTS ELMER A.
分类号
F04F1/18
主分类号
F04F1/18
代理机构
代理人
主权项
地址
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