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Updated: May 6, 2025
Reis was buried in the cemetery of Friedrichsdorff, and in 1878, after the introduction of the speaking telephone, the members of the Physical Society of Frankfort erected over his grave an obelisk of red sandstone bearing a medallion portrait. The first to produce a practicable speaking telephone was Alexander Graham Bell.
His experiments were made in a little workshop behind his home at Friedrichsdorff; and wires were run from it to an upper chamber.
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