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经营范围
发明名称
Crossbar switch
摘要
申请公布号
GB725368(A)
申请公布日期
1955.03.02
申请号
GB19530011355
申请日期
1953.04.24
申请人
STANDARD TELEPHONES AND CABLES LIMITED
发明人
分类号
H01H63/20
主分类号
H01H63/20
代理机构
代理人
主权项
地址
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