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发明名称
Improvements in or relating to variable resistance units for use in connection with wireless receiving sets and like electrical apparatus
摘要
申请公布号
GB378737(A)
申请公布日期
1932.08.18
申请号
GB19310033785
申请日期
1931.12.05
申请人
ALFRED ERNEST WATKINS
发明人
分类号
H01C10/32
主分类号
H01C10/32
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