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发明名称
Piano player
摘要
申请公布号
US2953957(A)
申请公布日期
1960.09.27
申请号
US19550552548
申请日期
1955.12.12
申请人
SKINNER LEE B;WILLIAMS WILLIAM H;WESTFIELD JOHN A
发明人
SKINNER LEE B.;WILLIAMS WILLIAM H.;WESTFIELD JOHN A.
分类号
G10F1/02
主分类号
G10F1/02
代理机构
代理人
主权项
地址
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