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经营范围
发明名称
Arrangements for use in electric signalling systems
摘要
申请公布号
GB428293(A)
申请公布日期
1935.05.10
申请号
GB19330031383
申请日期
1933.11.10
申请人
STANDARD TELEPHONES AND CABLES, LIMITED
发明人
分类号
H03C1/58
主分类号
H03C1/58
代理机构
代理人
主权项
地址
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