Science and technology
Erfindung des Telefons
1837 – Charles Grafton Page 1844 – Innocenzo Manzetti 1854 – Charles Bourseul 1860 – Antonio Meucci 1861 – Johann Philipp Reis 1875 – Elisha Gray 1876 – Alexander Graham Bell und Thomas A. Watson 1879 – Wilhelm Emil Fein 1889 – Almon Brown Strowger 1894 – Mihajlo Pupin 1900 – Reginald Fessenden 1902 – Valdemar Poulsen 1913 – Alexander Meißner