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经营范围
发明名称
Pumping apparatus
摘要
申请公布号
US1751767(A)
申请公布日期
1930.03.25
申请号
US19250037031
申请日期
1925.06.15
申请人
THE AMERICAN WELL WORKS
发明人
SPERRY JOHN B.
分类号
F04B47/02
主分类号
F04B47/02
代理机构
代理人
主权项
地址
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