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发明名称
ELECTRIC SWITCHING DEVICE
摘要
申请公布号
CA390894(A)
申请公布日期
1940.08.20
申请号
CAD390894
申请日期
申请人
EDOUARD KREBS
发明人
EDOUARD KREBS
分类号
主分类号
代理机构
代理人
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