Nikola Tesla U.S. Patent 577,670 - Apparatus for Producing Electric Currents of High Frequency Patent added March 1, 2015 - 12:21 AM
Nikola Tesla U.S. Patent 568,180 - Apparatus for Producing Electrical Currents of High Frequency Patent added March 1, 2015 - 12:21 AM
Nikola Tesla U.S. Patent 568,179 - Method of and Apparatus for Producing Currents of High Frequency Patent added March 1, 2015 - 12:21 AM
Nikola Tesla U.S. Patent 568,178 - Method of Regulating Apparatus for Producing Electric Currents of High Frequency Patent added March 1, 2015 - 12:21 AM
Nikola Tesla U.S. Patent 568,177 - Apparatus for Producing Ozone Patent added March 1, 2015 - 12:21 AM
Nikola Tesla U.S. Patent 568,176 - Apparatus for Producing Electrical Currents of High Frequency and Potential Patent added March 1, 2015 - 12:21 AM