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发明名称
Improvements in or relating to electric selective signalling systems
摘要
申请公布号
GB597325(A)
申请公布日期
1948.01.22
申请号
GB19460002886
申请日期
1944.11.08
申请人
STANDARD TELEPHONES AND CABLES LIMITED;ERIC MALCOLM SWIFT MCWHIRTER;HUGH JENNINGS WARD
发明人
分类号
H02J13/00
主分类号
H02J13/00
代理机构
代理人
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地址
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