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经营范围
发明名称
Improvements in or relating to a permeability tuning device
摘要
申请公布号
GB675888(A)
申请公布日期
1952.07.16
申请号
GB19500002485
申请日期
1950.01.31
申请人
THE PLESSEY COMPANY LIMITED
发明人
分类号
H01F21/06
主分类号
H01F21/06
代理机构
代理人
主权项
地址
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