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经营范围
发明名称
étage de tube à auto-excitation
摘要
申请公布号
FR1033475(A)
申请公布日期
1953.07.10
申请号
FRD1033475
申请日期
1951.03.06
申请人
FERNSEH G. M. B. H.
发明人
分类号
H03D7/08
主分类号
H03D7/08
代理机构
代理人
主权项
地址
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