Nikola Tesla British Patent 16,709 - Improvements Relating to the Conversion of Alternating into Direct Electric Currents
Nikola Tesla German Patent 139465 - Method and Device for the Utilization of Electrical Impulses or Vibrations Sent from a Distance by the Ether or the Earth or Both
Nikola Tesla German Patent 139464 - Method and Device for the Utilization of Electrical Impulses or Vibrations Sent from a Distance by the Ether or the Earth or Both
Nikola Tesla British Patent 14,579 - Improvements in and Relating to the Transmission of Electrical Energy
