Nikola Tesla British Patent 16,709 - Improvements Relating to the Conversion of Alternating into Direct Electric Currents
Nikola Tesla British Patent 20,981 - Improvements Relating to the Production, Regulation, and Utilization of Electric Currents of High Frequency, and to Apparatus Therefor
Nikola Tesla British Patent 186,083 - Improved Method of and Apparatus for the Economic Transformation of the Energy of Steam by Turbines
Nikola Tesla British Patent 8575 - Improved Methods of and Apparatus for Generating and Utilizing Electric Energy for Lighting Purposes