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发明名称
ELECTRON TUBE DEVICE
摘要
申请公布号
CA441282(A)
申请公布日期
1947.05.06
申请号
CAD441282
申请日期
申请人
C. LORENZ AKTIENGESELLSCHAFT
发明人
FELIX HERRIGER
分类号
主分类号
代理机构
代理人
主权项
地址
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