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发明名称
Traitement pour l'amélioration des goudrons de houille et applications industrielles des nouveaux produits qui en résultent
摘要
申请公布号
FR760720(A)
申请公布日期
1934.03.01
申请号
FRD760720
申请日期
1931.12.10
申请人
BOZEL-MALETRA
发明人
分类号
C08K5/07
主分类号
C08K5/07
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代理人
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