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发明名称
Improvements in or relating to variable-inductance tuning devices for radio apparatus
摘要
申请公布号
GB502172(A)
申请公布日期
1939.03.09
申请号
GB19370021913
申请日期
1937.08.09
申请人
P. R. MALLORY & CO. INC.
发明人
分类号
H01F21/00
主分类号
H01F21/00
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代理人
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