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经营范围
发明名称
Procédé de transmission de signaux sans fil par ondes modulées
摘要
申请公布号
FR677986(A)
申请公布日期
1930.03.17
申请号
FRD677986
申请日期
1929.07.06
申请人
TELEFUNKEN GESELLSCHAFT FUR DRAHTLOSE TELEGRAPHIE M.B.H.
发明人
分类号
H04B7/02
主分类号
H04B7/02
代理机构
代理人
主权项
地址
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