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发明名称
AKUSTISK DUBBELMEMBRAN.
摘要
申请公布号
FI915867(A0)
申请公布日期
1991.12.12
申请号
FI19910005867
申请日期
1991.12.12
申请人
KIRJAVAINEN, KARI JOHANNES
发明人
KIRJAVAINEN, KARI JOHANNES
分类号
H04R;(IPC1-7):H04R/
主分类号
H04R
代理机构
代理人
主权项
地址
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