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经营范围
发明名称
Pumping mechanism
摘要
申请公布号
US1978480(A)
申请公布日期
1934.10.30
申请号
US19300462467
申请日期
1930.06.20
申请人
SVENSON ERNEST J
发明人
SVENSON ERNEST J.
分类号
F04B23/10;F04C2/08;F04C11/00
主分类号
F04B23/10
代理机构
代理人
主权项
地址
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