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发明名称
Obtention de substances huileuses, pâteuses ou cristallines stables, de couleur claire, à partir du goudron de houille
摘要
申请公布号
FR898718(A)
申请公布日期
1945.05.04
申请号
FRD898718
申请日期
1943.06.01
申请人
发明人
PLASSAT HENRI-LOUIS;PLASSAT PAUL-RAYMOND
分类号
C08F240/00
主分类号
C08F240/00
代理机构
代理人
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地址
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