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发明名称
Improvements in variable permeability tuning devices
摘要
申请公布号
GB609857(A)
申请公布日期
1948.10.07
申请号
GB19460008345
申请日期
1946.03.18
申请人
MARCONI'S WIRELESS TELEGRAPH COMPANY LIMITED
发明人
分类号
H01F21/06
主分类号
H01F21/06
代理机构
代理人
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