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发明名称
Specific gravity recorder
摘要
申请公布号
US2451036(A)
申请公布日期
1948.10.12
申请号
US19440556534
申请日期
1944.09.30
申请人
STANDARD OIL DEVELOPMENT COMPANY
发明人
MARTIN JOHN R.;BURRELL FORREST B.
分类号
G01N9/10
主分类号
G01N9/10
代理机构
代理人
主权项
地址
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