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发明名称
Sounding-board bridge for pianos
摘要
申请公布号
US1747729(A)
申请公布日期
1930.02.18
申请号
US19260097284
申请日期
1926.03.25
申请人
FELIX MOSER
发明人
MOSER FELIX
分类号
G10C3/06
主分类号
G10C3/06
代理机构
代理人
主权项
地址
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