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发明名称
Dispositif perfectionné de transmission d'appel dans les installations à fréquence porteuse
摘要
申请公布号
FR858562(A)
申请公布日期
1940.11.28
申请号
FRD858562
申请日期
1939.08.01
申请人
C. LORENZ AKTIENGESELLSCHAFT
发明人
分类号
H04J1/14;H04Q1/442
主分类号
H04J1/14
代理机构
代理人
主权项
地址
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