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经营范围
发明名称
Improvements in or relating to arrangements for adjusting the flow of liquids
摘要
申请公布号
GB724416(A)
申请公布日期
1955.02.23
申请号
GB19530004163
申请日期
1953.02.13
申请人
YVES MARIE PONSAR;HYDRAULIQUE & URBANISME
发明人
分类号
E02B7/18
主分类号
E02B7/18
代理机构
代理人
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