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经营范围
发明名称
Unter Last umschaltbarer Stufentransformator
摘要
申请公布号
DE649842(C)
申请公布日期
1937.09.10
申请号
DE1936J055036D
申请日期
1936.05.17
申请人
DR.-ING. BERNHARD JANSEN
发明人
分类号
H01H9/00
主分类号
H01H9/00
代理机构
代理人
主权项
地址
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