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发明名称
Verfahren zur Herstellung von Depolarisationsmassen aus Naturbraunstein.
摘要
申请公布号
AT146312(B)
申请公布日期
1936.06.25
申请号
ATD146312
申请日期
1935.10.11
申请人
I. G. FARBENINDUSTRIE AKTIENGESELLSCHAFT
发明人
分类号
主分类号
代理机构
代理人
主权项
地址
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