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发明名称
Improvements in or relating to electrodynamic apparatus
摘要
申请公布号
GB467990(A)
申请公布日期
1937.06.28
申请号
GB19350035827
申请日期
1935.12.27
申请人
ERICH HAUSDORF
发明人
分类号
H04R9/00
主分类号
H04R9/00
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代理人
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