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发明名称
摘要
申请公布号
DE2029841(A1)
申请公布日期
1971.12.23
申请号
DE19702029841
申请日期
1970.06.18
申请人
WILMS H
发明人
分类号
H04R3/08;(IPC1-7):H04R3/04
主分类号
H04R3/08
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