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经营范围
发明名称
Amplificateur électronique
摘要
申请公布号
FR800440(A)
申请公布日期
1936.07.04
申请号
FRD800440
申请日期
1936.01.08
申请人
发明人
WEISS GEORG
分类号
H01J43/22
主分类号
H01J43/22
代理机构
代理人
主权项
地址
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