Alexander Graham Bell Day celebrates the anniversary of the day when patent 174,465 was granted for Bell’s acoustic telegraph machine that would eventually become the telephone - 7 March 1876.
Many know the story of the telephone's invention by Alexander Graham Bell and Thomas Watson, ending in the call with the famous words "Mr. Watson, come here. I want to see you." However ...
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