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经营范围
发明名称
Improvements in or relating to telephone installations
摘要
申请公布号
GB704036(A)
申请公布日期
1954.02.17
申请号
GB19510025135
申请日期
1951.10.26
申请人
SIEMENS & HALSKE A.G.
发明人
分类号
H01H63/02;H01H63/06
主分类号
H01H63/02
代理机构
代理人
主权项
地址
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