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经营范围
发明名称
Pumping unit
摘要
申请公布号
US1895181(A)
申请公布日期
1933.01.24
申请号
US19300502407
申请日期
1930.12.15
申请人
TROUT WALTER C
发明人
TROUT WALTER 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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