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Johann Philipp Reis

* 1834 Gelnhausen/Hessen
+1874 Friedrichsdorf bei Frankfurt


   

Philipp Reis


  German scientist and inventor.
In 1861, he constructed the first make-and-break telephone,
today called the Reis telephone.


2016 J. Giesen

zuletzt gešndert: 11. Jan. 2016