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发明名称
Improvements in or relating to valve-less pumps
摘要
申请公布号
GB313972(A)
申请公布日期
1930.05.22
申请号
GB19290018977
申请日期
1929.06.20
申请人
JEAN ARBRIL
发明人
分类号
F04B1/12;F04B1/20
主分类号
F04B1/12
代理机构
代理人
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