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经营范围
发明名称
Magnetronroehre
摘要
申请公布号
DE656800(C)
申请公布日期
1938.02.18
申请号
DE1935G091448D
申请日期
1935.11.01
申请人
DR.-ING. OTTO GROOS
发明人
分类号
H01J25/52
主分类号
H01J25/52
代理机构
代理人
主权项
地址
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