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发明名称
ELEKTROSTATISCHER ELEKTROAKUSTISCHER WANDLER
摘要
申请公布号
DE1437412(B2)
申请公布日期
1971.12.09
申请号
DE19641437412
申请日期
1964.01.24
申请人
发明人
分类号
H04R3/00;H04R19/02;(IPC1-7):H04R19/00
主分类号
H04R3/00
代理机构
代理人
主权项
地址
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