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发明名称
Upright piano
摘要
申请公布号
US2141728(A)
申请公布日期
1938.12.27
申请号
US19380187868
申请日期
1938.01.31
申请人
FREDERICK STEIN CHARLES;SWANSON ARTHUR C
发明人
STEIN CHARLES FREDERICK;SWANSON ARTHUR C.
分类号
G10C3/16
主分类号
G10C3/16
代理机构
代理人
主权项
地址
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