Alexandre Debain
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. Notes External links Harmonicord by Alexandre Debain, Paris ca. 1854-55 (The Piano in Polish Collections) French musical instrument makers 1809 births 1877 deaths Place of birth missing