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经营范围
发明名称
Hydrometer
摘要
申请公布号
US2180995(A)
申请公布日期
1939.11.21
申请号
US19380245644
申请日期
1938.12.14
申请人
CHARLES NURNBERG
发明人
NURNBERG CHARLES
分类号
G01N9/12
主分类号
G01N9/12
代理机构
代理人
主权项
地址
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