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发明名称
Pumping device
摘要
申请公布号
US1803705(A)
申请公布日期
1931.05.05
申请号
US19300423482
申请日期
1930.01.25
申请人
HARNER DAVID A
发明人
HARNER DAVID A.
分类号
F04B5/02;F04B19/02
主分类号
F04B5/02
代理机构
代理人
主权项
地址
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