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发明名称
Procédé et dispositif pour les mesures d'opacité
摘要
申请公布号
FR937931(A)
申请公布日期
1948.08.31
申请号
FRD937931
申请日期
1946.12.05
申请人
J. VISSEAUX
发明人
MIGNON JACQUES
分类号
G01N21/25
主分类号
G01N21/25
代理机构
代理人
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地址
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