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经营范围
发明名称
TELECOMMUNICATION EXCHANGE SYSTEMS
摘要
申请公布号
IL37915(D0)
申请公布日期
1971.12.29
申请号
IL19710037915
申请日期
1971.10.13
申请人
SIEMENS AG
发明人
分类号
H04B3/20
主分类号
H04B3/20
代理机构
代理人
主权项
地址
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