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经营范围
发明名称
Improvements in or relating to electrical switching circuits
摘要
申请公布号
GB822297(A)
申请公布日期
1959.10.21
申请号
GB19560017395
申请日期
1956.06.05
申请人
STANDARD TELEPHONES AND CABLES LIMITED
发明人
WRIGHT ESMOND PHILIP GOODWIN;BEZDEL WINCENTY
分类号
H04J3/20;H04Q11/04
主分类号
H04J3/20
代理机构
代理人
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地址
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