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经营范围
发明名称
Montage modulateur pour émetteurs à lampes
摘要
申请公布号
FR672844(A)
申请公布日期
1930.01.07
申请号
FRD672844
申请日期
1929.04.09
申请人
TELEFUNKEN GESELLSCHAFT FUR DRAHTLOSE TELEGRAPHIE M. B. H.
发明人
分类号
H03C1/22
主分类号
H03C1/22
代理机构
代理人
主权项
地址
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