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发明名称
Improvements relating to liquid flow-meters
摘要
申请公布号
GB641112(A)
申请公布日期
1950.08.02
申请号
GB19470032871
申请日期
1947.12.12
申请人
JAN NEUMANN;HEFA, NATIONAL CORPORATION
发明人
分类号
G01F3/18
主分类号
G01F3/18
代理机构
代理人
主权项
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