Patent drawing - 454622 - . Public domain image
U.S. Patent 0,454,622 - System of Electric Lighting - 1891 June 23 - Apparatus devised for the purpose of converting and supplying electrical energy in a form suited for the production of certain novel electr... More
Patent drawing - Insulated electrical conductor (patent drawing) Publi...
Insulated electrical conductor, patent n° 514,167.
Patent drawing - PhotoelectricEffect(Tesla) - . Public domain image
photoelectric_effect - Tesla patent - small PNG See also: en:Image:PhotoelectricEffect(Tesla-small).PNG Patent number: US 685,957 - Apparatus for the Utilization of Radiant Energy - 1901
Patent drawing - System of electric lighting - Nikola Tesla US patent ...
Diagram of single wire high frequency lighting system, fig. 1 from Nikola Tesla's US patent no. 454622 System of electric lighting granted June 23, 1891. This is important because it contains the first appear... More
Patent drawing - System of electric lighting-Nikola Tesla US patent 45...
Diagram of single-wire high frequency lighting system, fig. 1 from Nikola Tesla's US patent no. 454622 System of electric lighting granted June 23, 1891. This is important because it contains the first appear... More
Patent drawing - TeslaBifilar - . Public domain image
Bifilar coil in Nikola Tesla's United States patent 512,340 of 1894. Tesla explains that in some applications (which he does not specify) the self-inductance of a conventional coil is undesired and has to be n... More
Patent drawing - TeslaFlatSpiralCoil - . Public domain image
Tesla's Flat Spiral Coil
Patent drawing - US Patent 645576 Nikola Tesla 1897 System of transmis...
Drawing from US patent no. 645576 filed September 2 1897 by inventor Nikola Tesla covering his proposed system for transmitting electric power through the air without wires. Tesla believed that at 30,000 feet... More
Patent Drawing of Engine - US390721 Public domain image
Public domain scan of technical drawing, 19th-20th-century, free to use, no copyright restrictions image - Picryl description
Patent Drawing of Engine - Nicola Tesla Patent 2 - . Public domain im...
Illustration of Canadian Patent 135174. Public domain photograph of electrical equipment, power lines, engine, free to use, no copyright restrictions image - Picryl description
Patent Drawing of Engine - Nicola Tesla Patent - . Public domain imag...
Illustration of Canadian Patent 135174. Public domain photograph of electrical equipment, power lines, engine, free to use, no copyright restrictions image - Picryl description