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发明名称
Fremgangsmåde til fremstilling af pyromellitsyre.
摘要
申请公布号
DK77379(C)
申请公布日期
1954.04.12
申请号
DK19500003028
申请日期
1950.09.15
申请人
DE DIRECTIE VAN DE STAATSMIJNEN IN LIMBURG, HANDELEND VOOR EN NAMENS DE STAAT DER NEDERLANDEN
发明人
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主分类号
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