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发明名称
ELECTRIC CURRENT CONVERTING SYSTEM
摘要
申请公布号
CA325133(A)
申请公布日期
1932.08.16
申请号
CAD325133
申请日期
申请人
A. G. BROWN BOVERI ET CIE.
发明人
ERWIN KERN
分类号
主分类号
代理机构
代理人
主权项
地址
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