Telegraph multiplex, telephone transmitter and recievers, the phonograph, the lightbulb, an entire electrical distribution system, the kinetiscope and so many more.

He worked hard, he wasted little time and accomplished much. He was mistaken about some things, lost money in several cases through placing trust in the wrong person, his investment in ore refinery, made it back in new ventures. He disdained scientists and mathmeticians in speech but ending up hiring them and his sone became a mathmetician.

A man who changed the world, an iconic American hero. He did a great job working with the press to get good publicity although sometimes over promising :).