Name Alexandre Debain | Died 1877, Paris, France | |
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Alexandre-Francois Debain (6 July 1809 – 3 December 1877) was a French inventor who developed the harmonium. He made a new action system, in which, when depressing a note on the keyboard, a valve opened thereby emitting sound from the instrument. He patented it in Paris in 1842.
References
Alexandre Debain Wikipedia(Text) CC BY-SA