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经营范围
发明名称
PROCEDE POUR LA PREPARATION DE MELAMINE.
摘要
申请公布号
BE552750(A1)
申请公布日期
1960.01.15
申请号
BE19560552750
申请日期
1956.11.20
申请人
BERGWERKSVERBAND ZUR VERWERTUNG VON SCHUTZRECHTENDER KOHLENTECHNIK G.M.B.H.
发明人
分类号
(IPC1-7):C07
主分类号
(IPC1-7):C07
代理机构
代理人
主权项
地址
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