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发明名称
Phase changer
摘要
申请公布号
GB686286(A)
申请公布日期
1953.01.21
申请号
GB19510003816
申请日期
1951.02.16
申请人
STANDARD TELEPHONES AND CABLES LIMITED
发明人
分类号
H01P1/18;H01P1/19;H01P3/10
主分类号
H01P1/18
代理机构
代理人
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