Nikola Tesla U.S. Patent 382,282 - Method of Converting and Distributing Electric Currents Patent added March 1, 2015 - 12:20 AM
Nikola Tesla U.S. Patent 381,970 - System of Electrical Distribution Patent added March 1, 2015 - 12:20 AM
Nikola Tesla U.S. Patent 382,281 - Electrical Transmission of Power Patent added March 1, 2015 - 12:20 AM
Nikola Tesla U.S. Patent 382,280 - Electrical Transmission of Power Patent added March 1, 2015 - 12:20 AM