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发明名称
Method for activating glowing cathodes or the like
摘要
申请公布号
US1894946(A)
申请公布日期
1933.01.24
申请号
US19300475400
申请日期
1930.08.14
申请人
SIEMENS & HALSKE AKTIENGESELLSCHAFT
发明人
ESPE WERNER
分类号
H01J9/04
主分类号
H01J9/04
代理机构
代理人
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