- Edison built his first phonograph in 1877 and put a patent on it at that same time. He developed the phonograph while working on the telegraph and telephone.
- Edison's top ten inventions were:
Durable light bulb (40 hours)
Electrical Vote Recorder
Quadruplex, sextuplex and multiplex telegraph
Carbon microphone
Electricity distribution system
Fist commercial fluoroscope (for X-Ray examinations)
Stock ticker
Kinetograph (motion picture camera)
Kinetoscope (peep hole viewer)