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发明名称
PIANO KEYBOARD
摘要
申请公布号
RU1769231(C)
申请公布日期
1992.10.15
申请号
SU19894721897
申请日期
1989.06.20
申请人
NEARONOV GURIJ P,SU
发明人
NEARONOV GURIJ P,SU
分类号
G10C3/12
主分类号
G10C3/12
代理机构
代理人
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地址
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