marsel86'den mesaj -
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Thomas Alva Edison
- Famous american inventor and employed.
- Edison got in the U.S. thousand patents and about three thousand patents in the other countries.
- He improved telegraph, telephone, cinematographic equipment.
- He constructed electric lamp.
- It was who suggested the use of a telephone conversation at the beggining of the word " Hello"
- marsel86
February 2014
Şİmdi oyla!
Lütfen, Her cümleyi düzeltmek için yardım edin ! -
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