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发明名称
Improvements in or relating to telephone systems
摘要
申请公布号
GB394585(A)
申请公布日期
1933.06.29
申请号
GB19320034354
申请日期
1932.12.05
申请人
STANDARD TELEPHONES AND CABLES, LIMITED;JOHN ROSEWELL HARDWICK
发明人
分类号
H04M11/04
主分类号
H04M11/04
代理机构
代理人
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地址
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