"Tivadar Puskás de Ditró (English: Theodore Puskás b. 17 September 1844, Pest, Kingdom of Hungary, Austrian Empire – d. 16 March 1893, Budapest, Austria-Hungary) was a ...
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Hungarian inventor, telephone pioneer, and inventor of the telephone exchange. He was also the founder of Telefon Hírmondó." - (en.wikipedia.org 10.03.2021)