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发明名称
Electric discharge tubes
摘要
申请公布号
GB351909(A)
申请公布日期
1931.07.02
申请号
GB19290029313
申请日期
1929.12.23
申请人
RHEINISCHE METALLWAAREN-UND MASCHINENFABRIK
发明人
分类号
H01J17/30
主分类号
H01J17/30
代理机构
代理人
主权项
地址
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