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发明名称
Diaphragm pump
摘要
申请公布号
US1877873(A)
申请公布日期
1932.09.20
申请号
US19310507671
申请日期
1931.01.09
申请人
HOLMGREEN RICHARD J
发明人
HOLMGREEN RICHARD J.
分类号
F04B1/02;F04B43/02;F04B43/067;F04B53/10
主分类号
F04B1/02
代理机构
代理人
主权项
地址
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