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发明名称
Pumping unit
摘要
申请公布号
US2071437(A)
申请公布日期
1937.02.23
申请号
US19330671225
申请日期
1933.05.15
申请人
SEARLE CLARENCE C
发明人
SEARLE CLARENCE C.
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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