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发明名称
Acoustical ring and bell sound system
摘要
申请公布号
EP0874350(B1)
申请公布日期
2005.06.15
申请号
EP19980400971
申请日期
1998.04.21
申请人
VALGON SOUND INC.
发明人
VALTCHEV, KONSTANTIN L.;GOMEZ, HAROLD
分类号
G10D9/00;(IPC1-7):G10D9/00
主分类号
G10D9/00
代理机构
代理人
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地址
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