John Ericsson (July 31, 1803 – March 8, 1889) was a Swedish inventor and mechanical engineer, as was his brother, Nils Ericson. He was born at Langbanshyttan in Varmland, Sweden, but primarily came to be active in the United States.

John Ericsson

John Ericsson (July 31, 1803 – March 8, 1889) was a Swedish inventor and mechanical engineer, as was…