American inventor Alexander Graham Bell with one of his inventions, ca. 1910. Bell engineered the first intelligible electronic transmission of voice...
engraving alexander graham bell making a call on antique telephone - alexander graham bell 幅插畫檔、美工圖案、卡通及圖標
alexander graham bell speaking 1876 bell telephone, side view. - alexander graham bell 幅插畫檔、美工圖案、卡通及圖標
Group of businessmen watch inventor Alexander Graham Bell as he opens the New York-Chicago telephone line.
American educator and inventor Alexander Graham Bell , who produced the first clear telephonic transmission of the human voice in 1875.
Alexander Graham Bell at the New York end of the first long-distance telephone call to Chicago in 1892.
Alexander Graham Bell, Scots born American inventor who produced the first intelligible telephonic transmission and later formed the Bell Telephone...
Portrait of Alexander Graham Bell , inventor of the telephone. He wears headphones that are attached to a piece of electrical apparatus.
In the centennial year of 1876, Alexander Graham Bell sent his first telephone message. Here he is 16 years later, surrounded by executives, making...
'Bell's telephone in operation', late 19th century. Scottish-born American inventor Bell filed the patent for his telephone at the United States...
Alexander Graham Bell makes the first telephone call from New York to Chicago in 1892. Bell invented the telephone sixteen years earlier in 1876.
Scottish inventor Alexander Graham Bell who invented the telephone. Bell, born in Edinburgh, worked with his father, Scottish educator Alexander...
antique illustration, physics principles and experiments, electricity and magnetism: bell's telephone - alexander graham bell 幅插畫檔、美工圖案、卡通及圖標
Scottish inventor Alexander Graham Bell demonstrating his telephone at the Lyceum Hall in Salem, Massachusetts, 15th March 1877.
Alexander Graham Bell , Scottish-born American inventor, 1892. Bell patented the telephone in 1876. Here he is inaugurating the 1520 km telephone...
Scottish scientist and inventor Alexander Graham Bell , circa 1920. Bell's best known inventions are the telephone and the metal detector.
This box telephone, which was previously used at Lloyds Signal station in Crookhaven, represents one of Alexander Graham Bell's earliest efforts to...
Alexander Graham Bell was born in Scotland but emigrated to the United States, settling in Boston where he began his career as an inventor. On 7...
Alexander Graham Bell Scottish-born American inventor: patented telephone 1876: Bell inaugurating 1520 km telephone link between New York and...
Alexander Graham Bell a Scots-born American inventor who established the Bell Telephone Company. Bell, born in Edinburgh, worked with his father,...
Alexander Graham Bell makes the first telephone call between New York and Chicago, USA, 1892. Scottish-born American inventor Alexander Graham Bell...
Portrait of Alexander Graham Bell , inventor of the telephone. He stands outdoors, next to an elaborate kite.
Alexander Graham Bell at the unveiling of a plaque commemorating his1876 invention of the telephone, Boston, Massachusetts, 1916.
Alexander Graham Bell Scottish-born American inventor: patented telephone 1876. Photograph of Bell as a young man.
Bell at the opening of the long-distance line from New York to Chicago in 1892. Alexander Graham Bell, 1847 –1922. Eminent Scottish-born scientist,...
Alexander Graham Bell is the famous Scottish inventor of the telephone and established the Bell Telephone Company in 1877. He also found innovative...
The phones used by Thomas Watson, and Alexander Graham Bell, to make the first transcontinental phone call from New York to San Francisco, a hundred...
Engraving depicting a Bell telephone, invented by Alexander Graham Bell. Alexander Graham Bell a Scottish-born scientist, inventor, engineer, and...
Scottish inventor and scientist Alexander Graham Bell in the year he filed a patent for the telephone, 1876.
Experiments on the phone from Dr. Alexander Graham Bell , to transmit the human voice over long distances. Boston, 1877. United States. 19th-century...
Circular produced by Alexander Graham Bell's agent Reynolds. This shows that in his original system the same design of instrument was used as both...
Alexander Graham Bell, Scottish-born American inventor, 19th century. Bell , who patented the telephone in 1876, as a young man. .
Alexander Graham Bell , Scottish-born American inventor, 1892. Bell patented the telephone in 1876. Here he is inaugurating the 1520 km telephone...
