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发明名称
Mehrsystemroehre
摘要
申请公布号
DE709969(C)
申请公布日期
1941.09.01
申请号
DE1933R087172D
申请日期
1933.02.07
申请人
LOEWE RADIO AKT.-GES.
发明人
WIENECKE BRUNO
分类号
H01J21/20
主分类号
H01J21/20
代理机构
代理人
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