Original Assignee Aurora Corp Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.) Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Expired - Lifetime Application number US87026A Inventor Gunten Lee L Von Current Assignee (The listed assignees may be inaccurate. Google Patents Electric memory latch device for piano having electric chord and run playing mechanismĭownload PDF Info Publication number US3160049A US3160049A US87026A US8702661A US3160049A US 3160049 A US3160049 A US 3160049A US 87026 A US87026 A US 87026A US 8702661 A US8702661 A US 8702661A US 3160049 A US3160049 A US 3160049A Authority US United States Prior art keywords playing switch piano octave note Prior art date Legal status (The legal status is an assumption and is not a legal conclusion. Google Patents US3160049A - Electric memory latch device for piano having electric chord and run playing mechanism US3160049A - Electric memory latch device for piano having electric chord and run playing mechanism

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