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发明名称
PIANO SOUNDING BOARD
摘要
申请公布号
RU1818633(C)
申请公布日期
1993.05.30
申请号
SU19904873565
申请日期
1990.10.15
申请人
BYKOV VLADIMIR A
发明人
BYKOV VLADIMIR A
分类号
G10C3/06;(IPC1-7):G10C3/06
主分类号
G10C3/06
代理机构
代理人
主权项
地址
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