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发明名称
ELECTRON DISCHARGE DEVICE
摘要
申请公布号
CA339283(A)
申请公布日期
1934.02.06
申请号
CAD339283
申请日期
申请人
THE WESTERN ELECTRIC COMPANY
发明人
VICTOR LIONEL RONCI
分类号
主分类号
代理机构
代理人
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地址
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