Nikola Tesla U.S. Patent 685,955 - Apparatus for Utilizing Effects Transmitted From A Distance To A Receiving Device Through Natural Media
Nikola Tesla British Patent 16,709 - Improvements Relating to the Conversion of Alternating into Direct Electric Currents
Nikola Tesla German Patent 66802 - AC Driving Machine with Main and Auxiliary Magnets Acting on a Self-Contained Armature Winding
