Write the answer: What device did French inventor douard-Lon Scott de Martinville patent in 1857?
phonautograph
Skriv svaret: Vilken apparat patenterade den franske uppfinnaren douard-Lon Scott de Martinville 1857?
Write the answer: What device did the French inventor douard-Lon Scott de Martinville patented in 1857?
fonautograf
fonautograf