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23 apr 1894 anni - Spark transmitter invented

Descrizione:

Guglielmo Marconi invented the spark transmitter and obtained the first patent for a radio device (Omaha World Herald, 1897; Buckland & Dye, 1991).

Aggiunto al nastro di tempo:

History of Distance Learning

ByAndrew Harned

27 ott 2018

0

0

492

Data:

23 apr 1894 anni

Adesso

~ 131 years ago

Immagini:

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