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发明名称
Perfectionnement apporté aux densitomètres
摘要
申请公布号
FR1272999(A)
申请公布日期
1961.10.06
申请号
FR19600836574
申请日期
1960.08.24
申请人
发明人
MATVEEFF VLADIMIR
分类号
G01J1/30
主分类号
G01J1/30
代理机构
代理人
主权项
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