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经营范围
发明名称
Dispositif de système téléphonique
摘要
申请公布号
FR1035757(A)
申请公布日期
1953.08.31
申请号
FRD1035757
申请日期
1951.03.10
申请人
发明人
SKOKSBERG ERIK LENNART
分类号
G08B29/16
主分类号
G08B29/16
代理机构
代理人
主权项
地址
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