Telephone Call-Signal – Telephones or Speaking-Telegraphs – Circuits for Acoustic or Telephonic Telegraphs – Perforating Pens – Pneumatic Stencil-Pens – Duplex Telegraphs – Duplex Telegraphs – Speaking-Telephones – Quadruplex-Telegraph Repeaters – Vocal Engines (better known as the Phonomotor) – Automatic Telegraphs – Electric Lights – Thermal Regulators for Electric Lights – Sextuplex Telegraphs – Duplex Telegraphs – Magneto-Electric Machines – Apparatus for Electric Lights – Electric Lighting Apparatus – Dynamo-Electric Machine – Electric Lights – Telephones – Carbon-Telephones – Magneto-Electric Machines : Edison main dynamo. The device's nickname was the "long-legged Mary-Ann". This device has large bipolar magnets and is highly inefficient. – Electric Lamp : Edison's incandescent light bulb invention. The original spiral carbon-filament is shown and repeatedly referred to. First practical commercially viable electric lamp. This device replaced the flame lamp, gas lamp, kerosene-oil lamp, and wax candle. – Electric-Lighting Apparatus – Autographic Stencils for Printing – Safety-Conductor for Electric Lights – Electric Light – Electric Light – Electric Light – Phonograph – Magnetic Ore-Separator – Brake for Electro-Magnetic Motors – Method of Manufacturing Electric Lamps – Addressing-Machine – Electro-Chemical Receiving-Telephone – Acoustic Telegraph – Electric Light – Magneto Signal Apparatus – Manufacture of Carbons for Incandescent Electric Lamps – System of Electric Lighting – Treating Carbons for Electric Lamps – Incandescing Electric Lamp – Electric Lamp – Method of Forming Enlarged Ends on Carbon Filaments – System of Electric Lighting – Electric Lamp – Relay for Telegraphs – Testing Electric-Light Carbons – Electric Lamp – Regulating the Generation of Electric Currents – Electric Lamp – Webermeter – Incandescent Electric Lamp – Incandescent Electric Lamp – Magneto or Dynamo Electric Machine – Electric Lighting – Manufacturing Carbons for Electric Lamps – Electric Meter – Manufacture of Carbons for Electric Lamps – Manufacturing Carbons for Electric Lights – Electric Lamp – Electric Lamp – Fixture and Attachment for Electric Lamps – Current-Regulator for Dynamo-Electric Machines – System of Electric Lighting – Carbonizer – Fitting and Fixture for Electric Lamps – Apparatus for Producing High Vacuums – Apparatus for Treating Carbons for Electric Lamps – Apparatus for Treating Carbons for Electric Lamps – Manufacture of Incandescent Electric Lamps – Electric Motor – Electro-Magnetic Brake – Preserving Fruit – Magnetic Separator 201 to 300 The next series of patents Edison received was mainly for the electrical distribution of power and the electric light. In 1883, Edward H. Johnson, a business associate