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发明名称
Automatic volume control devices for wave transmission systems
摘要
申请公布号
GB486372(A)
申请公布日期
1938.06.02
申请号
GB19370021191
申请日期
1937.07.30
申请人
STANDARD TELEPHONES AND CABLES LIMITED
发明人
分类号
H03G3/22
主分类号
H03G3/22
代理机构
代理人
主权项
地址
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