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经营范围
发明名称
Verstaerkerroehre mit bandfoermigem Elektronenstrahl
摘要
申请公布号
DE1032855(B)
申请公布日期
1958.06.26
申请号
DE1944L007698D
申请日期
1944.08.14
申请人
LOEWE OPTA AKTIENGESELLSCHAFT
发明人
GOBRECHT DR. HEINRICH
分类号
H01J31/04
主分类号
H01J31/04
代理机构
代理人
主权项
地址
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