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发明名称
Electric discharge device
摘要
申请公布号
US1761175(A)
申请公布日期
1930.06.03
申请号
US19280261833
申请日期
1928.03.15
申请人
RADIO CORPORATION
发明人
BOL CORNELIS;NUMANS JOHANNES JACQUES
分类号
H01J5/42
主分类号
H01J5/42
代理机构
代理人
主权项
地址
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