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发明名称
ELECTRON DISCHARGE DEVICE
摘要
申请公布号
CA385089(A)
申请公布日期
1939.11.14
申请号
CAD385089
申请日期
申请人
ELECTRIC AND MUSICAL INDUSTRIES
发明人
OTTO KLEMPERER
分类号
主分类号
代理机构
代理人
主权项
地址
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