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经营范围
发明名称
Improvements in or relating to electric circuits having electric loading coils for use in telephony
摘要
申请公布号
GB677039(A)
申请公布日期
1952.08.06
申请号
GB19500019919
申请日期
1950.08.10
申请人
PHILIPS ELECTRICAL INDUSTRIES LIMITED
发明人
分类号
H01F17/08
主分类号
H01F17/08
代理机构
代理人
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