Alphabetical Index Index by Year of Birth
Johann Philipp Reis
* 1834 Gelnhausen/Hessen
+ 1874 Friedrichsdorf bei Frankfurt
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German scientist and inventor.
In 1861, he constructed the first make-and-break telephone,
today called the Reis telephone.
2016 J. Giesen
zuletzt geändert: 11. Jan. 2016