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Communication > Telegraph & Telephone


On 24th May, 1844,
 Samuel Morse made the first public demonstration of the telegraph... Read more »

On 18th April, 1846,
 The telegraph ticker was patented by R. E. House... Read more »

On 7th March, 1876,
 Alexander Graham Bell received a patent for his Improvement in Telegraphy... Read more »

On 21st February, 1878,
 The world’s first telephone directory was issued in Connecticut, USA... Read more »

On 10th March, 1891,
 Almon Strowger patented his Automatic Telephone-Exchange... Read more »

On 17th November, 1891,
 Emile Berliner patented the combined telegraph and telephone... Read more »

On 19th June, 1900,
 Michael Pupin patented his improvement in long distance telephony... Read more »

On 16th February, 1968,
 The US first began using 911 as an emergency telephone number... Read more »

On 1st February, 1983,
 The first digital voice mail system was patented... Read more »