Edward A. Calahan
Edward Augustin Calahan (1838–1912) was an American inventor, credited with invention of a ticker tape, gold and stock tickers, and a multiplex telegraph system.
Edward A. Calahan - Wikipedia Jump to content From Wikipedia, the free encyclopedia American inventor Edward A. Calahan Born 1838 Boston, Massachusetts Died 1912 (aged 73–74) Occupation Inventor Known for Invention of ticker tape, gold and stock tickers, multiplex telegraph system Edward Augustin Calahan (1838–1912) was an American inventor, credited with invention of a ticker tape , gold and stock tickers, and a multiplex telegraph system. [ 1 ] Calahan was born in Boston, Massachusetts . He left school at the age of 11 to pursue his interest to be part of a modern bus
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