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发明名称
Hoergeraet,insbesondere fuer Schwerhoerige
摘要
申请公布号
DE2057611(A1)
申请公布日期
1972.06.08
申请号
DE19702057611
申请日期
1970.11.24
申请人
DREVE,WOLFGANG
发明人
DREVE,WOLFGANG
分类号
H04R25/00
主分类号
H04R25/00
代理机构
代理人
主权项
地址
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