Nikola Tesla Images and Photographs
Images and photographs of, or related to, Nikola Tesla
Arrangements of directive circuits from Tesla's U. S. Patent No. 613,809
Fig. 12. — Arrangements of Directive Circuits Described In Tesla's U. S. Patent No. 613,809 of November 8. 1898, on "Method of and Apparatus for Controlling Mechanism of Moving Vessels or Vehicles."