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发明名称
Installation pour convertir des signaux télégraphiques à double courant en signaux à simple courant
摘要
申请公布号
FR1280244(A)
申请公布日期
1961.12.29
申请号
FR19610851655
申请日期
1961.02.03
申请人
SIEMENS & HALSKE AKTIENGESELLSCHAFT
发明人
分类号
H04L25/22
主分类号
H04L25/22
代理机构
代理人
主权项
地址
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