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发明名称
Vorrichtung fuer Kopfhoerer
摘要
申请公布号
DE1291789(B)
申请公布日期
1969.04.03
申请号
DE1965L052475
申请日期
1965.12.23
申请人
LITZKA, FRANZ
发明人
分类号
H04R1/10
主分类号
H04R1/10
代理机构
代理人
主权项
地址
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