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经营范围
发明名称
Improvements in or relating to thermionic oscillation generators
摘要
申请公布号
GB418429(A)
申请公布日期
1934.10.24
申请号
GB19340016623
申请日期
1934.06.04
申请人
ETABLISSEMENTS EDOUARD BELIN
发明人
分类号
H03B5/30
主分类号
H03B5/30
代理机构
代理人
主权项
地址
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