发明授权
- 专利标题: Player-piano.
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申请号: US1912684444申请日: 1912-03-18
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公开(公告)号: US1066633A公开(公告)日: 1913-07-08
- 发明人: LEISCH JOSEPH
- 申请人: JOHN CHURCH COMPANY
- 专利权人: John Church Company
- 当前专利权人: John Church Company
- 优先权: US1912684444 1912-03-18
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