The telephone: 1876, Alexander Graham Bell, Scottisch - American, Paper: 105 A.D., government official, Chinese, Cai Lun, The printing press: 1440, German, printer, Johannes Gutenberg, The radio: 1896, Guglielmo Marconi, Italian, physicist, Television: 1924, Scottisch, engineer, John Logie Baird, The ballpoint pen: 1938, Hungarian, journalist, Laslo Biro, The PC: 1976, Steve Jobs and Steve Wozniak, American, computer engineers,

Inventions

દ્વારા
પ્રિન્ટ
એમ્બેડ

લીડરબોર્ડ

દૃશ્યમાન શૈલી

વિકલ્પો

ટેમ્પલેટ બદલો

આપોઆપ સંગ્રહ થયેલ છે: ?