Nikola Tesla U.S. Patent 462,418 - Method of and Apparatus for Electrical Conversion and Distribution Patent added March 1, 2015 - 12:21 AM
Nikola Tesla U.S. Patent 447,921 - Alternating Electric Current Generator Patent added March 1, 2015 - 12:21 AM
Nikola Tesla U.S. Patent 447,920 - Method of Operating Arc-Lamps Patent added March 1, 2015 - 12:21 AM
Nikola Tesla U.S. Patent 433,702 - Electrical Transformer or Induction Device Patent added March 1, 2015 - 12:21 AM
Nikola Tesla U.S. Patent 433,700 - Alternating-Current Electro-Magnetic Motor Patent added March 1, 2015 - 12:21 AM
Nikola Tesla U.S. Patent 417,794 - Armature for Electric Machines Patent added March 1, 2015 - 12:21 AM