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发明名称
Agencement de systèmes sélectifs notamment pour la téléphonie des chemins de fer
摘要
申请公布号
FR1246995(A)
申请公布日期
1960.11.25
申请号
FR19590812717
申请日期
1959.12.10
申请人
TELEFONAKTIEBOLAGET L M ERICSSON
发明人
分类号
B61L25/04;H04M1/70
主分类号
B61L25/04
代理机构
代理人
主权项
地址
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