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发明名称
Perfectionnement aux dispositifs de transmission téléphonique ou télégraphique par fréquence porteuse
摘要
申请公布号
FR901336(A)
申请公布日期
1945.07.24
申请号
FRD901336
申请日期
1944.01.19
申请人
LICENTIA PATENT-VERWALTUNGS-GESELLSCHAFT MIT BESCHRANKTER HAFTUNG
发明人
分类号
H04J1/08
主分类号
H04J1/08
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代理人
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