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Alexandre-François 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.
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debain paris harmonium alexandre-françois july 1809 december 1877 french inventor developed made new action system depressing note keyboard valve opened
| Subject | Predicate | Object | Confidence | Src |
|---|---|---|---|---|
| Alexandre Debain | related to External links | Harmonicord | 0.60 | section |
| Alexandre Debain | related to External links | Paris | 0.60 | section |
| Alexandre Debain | related to External links | The Piano | 0.60 | section |
| Alexandre Debain | related to External links | Polish Collections | 0.60 | section |
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