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经营范围
发明名称
Elektroakustischer Wandler
摘要
申请公布号
AT240446(B)
申请公布日期
1965.05.25
申请号
AT19630009890
申请日期
1963.12.10
申请人
S. G. BROWN LIMITED
发明人
分类号
H04R17/00
主分类号
H04R17/00
代理机构
代理人
主权项
地址
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