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发明名称
Transmission systems
摘要
申请公布号
GB504887(A)
申请公布日期
1939.05.02
申请号
GB19380026383
申请日期
1938.09.09
申请人
STANDARD TELEPHONES AND CABLES LIMITED
发明人
分类号
H03F3/36
主分类号
H03F3/36
代理机构
代理人
主权项
地址
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