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经营范围
发明名称
Elektronen-Entladungsroehre
摘要
申请公布号
DE529646(C)
申请公布日期
1931.07.15
申请号
DE1926C037739D
申请日期
1926.01.24
申请人
RUPERT EVAN HOWARD CARPENTER
发明人
分类号
H01J19/68
主分类号
H01J19/68
代理机构
代理人
主权项
地址
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