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date: 14 November 2019

Palsiphone électro-magnétiquelocked


A device patented by Charles Emile Guerre and Gaston Henri Martin in Paris on 11 March 1890 and later, for setting the strings of instruments such as the piano and violin in vibration by electromagnetic means. The American patent image (no.472,453, 5 April 1982) shows the device applied to a keyboard instrument shaped like an upright piano. The principle could also be applied to bells. Further developments of the device were patented from ...

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