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发明名称
Hydrometer
摘要
申请公布号
US2307745(A)
申请公布日期
1943.01.12
申请号
US19400350334
申请日期
1940.08.03
申请人
E. EDELMANN & CO.
发明人
LUTZ HERMAN J.;EDELMANN LEO
分类号
G01N9/14
主分类号
G01N9/14
代理机构
代理人
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