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发明名称
SISTEMA ESCAMOTEAVEL DOS TECLADOS E PES DE PIANOS
摘要
申请公布号
BR6902381(U)
申请公布日期
1991.07.16
申请号
BR1989MU02381U
申请日期
1989.11.21
申请人
JULIANE B. AMMANN
发明人
JULIANE B. AMMANN
分类号
G10C3/00;(IPC1-7):G10C3/00
主分类号
G10C3/00
代理机构
代理人
主权项
地址
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