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发明名称
PROCESS FOR PREARING MALEIC ANHYDRIDE BY USING VANADIUM PHOSPHORUS CATALYSTS
摘要
申请公布号
KR1019880000922(B1)
申请公布日期
1988.05.31
申请号
KR1019880004065
申请日期
1988.04.11
申请人
发明人
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主分类号
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