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发明名称
Meta-phthalic acid anhydride and method of making same
摘要
申请公布号
US2570890(A)
申请公布日期
1951.10.09
申请号
US19480054823
申请日期
1948.10.15
申请人
GEORGE WALTON
发明人
WALTON GEORGE
分类号
C07C51/56
主分类号
C07C51/56
代理机构
代理人
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