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发明名称
Electrical piano
摘要
申请公布号
US2486545(A)
申请公布日期
1949.11.01
申请号
US19460671587
申请日期
1946.05.22
申请人
JOSE ALVAREZ OCTAVIO
发明人
ALVAREZ OCTAVIO JOSE
分类号
G10H3/20
主分类号
G10H3/20
代理机构
代理人
主权项
地址
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