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经营范围
发明名称
Installation de transmission à voies multiples.
摘要
申请公布号
CH305580(A)
申请公布日期
1955.02.28
申请号
CHD305580
申请日期
1947.05.29
申请人
STANDARD TELEPHONE ET RADIO S. A.
发明人
STANDARD TELEPHONE ET RADIO S. A.
分类号
H04B3/04
主分类号
H04B3/04
代理机构
代理人
主权项
地址
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