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发明名称
Improvements relating to selecting switches such as used in automatic telephone systems
摘要
申请公布号
GB339434(A)
申请公布日期
1930.12.11
申请号
GB19290032989
申请日期
1929.10.30
申请人
SIEMENS BROTHERS & CO., LIMITED;CHRISTIAN RASMUS RIBER;THOMAS HENRY JONES
发明人
分类号
H01H63/20;H01H67/12
主分类号
H01H63/20
代理机构
代理人
主权项
地址
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