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发明名称
PRUEFMITTEL ZUR BESTIMMUNG DER WASSERSTOFFIONENKONZENTRATION = PH-MESSUNG IN LOESUNGEN.
摘要
申请公布号
DE1668125(U)
申请公布日期
1953.12.10
申请号
DE195300O1993U
申请日期
1953.10.16
申请人
OXYPEHN A.G.
发明人
分类号
主分类号
代理机构
代理人
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