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发明名称
PROCESS FOR THE PURIFICATION OF PHTHALIC ANHYDRIDE
摘要
申请公布号
GB1549533(A)
申请公布日期
1979.08.08
申请号
GB19770042459
申请日期
1977.10.12
申请人
BAYER AG
发明人
分类号
C07D307/89;C07C51/573;(IPC1-7):C07D307/78
主分类号
C07D307/89
代理机构
代理人
主权项
地址
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