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发明名称
Verfahren zum Schaetzen und Bestimmen des Haertegrades von Wasser
摘要
申请公布号
DE492609(C)
申请公布日期
1930.02.25
申请号
DE1928H117157D
申请日期
1928.06.28
申请人
DR. FRIEDRICH HAHN
发明人
分类号
G01N31/22
主分类号
G01N31/22
代理机构
代理人
主权项
地址
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