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发明名称
Music rest for pianos
摘要
申请公布号
US1838630(A)
申请公布日期
1931.12.29
申请号
US19310547060
申请日期
1931.06.26
申请人
THE BALDWIN COMPANY
发明人
MORSE ARTHUR H.
分类号
G10C3/02
主分类号
G10C3/02
代理机构
代理人
主权项
地址
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