资讯
March 7 (UPI) --On this date in history: In 1876, Alexander Graham Bell was granted a patent for the telephone ... confirmed William Wilson as the first U.S. ambassador to the Vatican in 117 ...
On March 10, 1876 Brantford resident Alexander Graham Bell made the world’s first telephone call when he managed to communicate with an assistant in an adjoining room. The technology improved to ...
Alexander Graham Bell is most well known for ... He figured out how to transmit a simple current first, and received a patent for that invention on March 7, 1876. Five days later, he transmitted ...
Though Joseph Henry earned his fame as the first director of the Smithsonian Institute, he was in many ways the telephone's first and best advocate. Alexander Graham ... and Bell's patent prevailed.) ...
Alexander Graham Bell hated few ... the Wright brothers received their patent, Bell’s kite lifted an associate to over 160 feet. In 1915 he’d made the first coast-to-coast phone call; soon ...
一些您可能无法访问的结果已被隐去。
显示无法访问的结果