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经营范围
发明名称
ELECTRON DISCHARGE DEVICE
摘要
申请公布号
CA413984(A)
申请公布日期
1943.07.20
申请号
CAD413984
申请日期
申请人
ELECTRIC AND MUSICAL INDUSTRIES LIMITED
发明人
HEINZ ERWIN KALLMANN
分类号
主分类号
代理机构
代理人
主权项
地址
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