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发明名称
KONTROLLVERFAHREN UND VORRICHTUNG ZUR ERZEUGUNG EINES TONS KONSTANTER FREQUENZ MIT EINER ELEKTRISCHEN HUPE
摘要
申请公布号
DE69841887(D1)
申请公布日期
2010.10.21
申请号
DE19986041887
申请日期
1998.07.28
申请人
WAN, YU
发明人
WAN, YU
分类号
G10K9/12;B60Q5/00;G10K15/04
主分类号
G10K9/12
代理机构
代理人
主权项
地址
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