Electrical Transmission of Power – Electrical Transmission of Power – Telegraphy – Dynamo-Electric Machine : Includes an extra coil and utilizes a field of force. – Telegraphy – Magnetic Separator – Telephone-Transmitter – Incandescent Electric Lamp – Regulator for Dynamo-Electric Machines – System of Electrical Distribution – Commutator for Dynamo-Electric Machines – Pyromagnetic Motor – System of Electrical Distribution – System of Electrical Distribution – Burnishing Attachment for Phonographs – System of Electrical Distribution – Feed and Return Mechanism for Phonographs – Process of Making Phonogram-Blanks – Phonogram-Blank – Process of Duplicating Phonograms – Phonogram-Blank – Railway Signaling – System of Electrical Distribution – Phonograph – Incandescing Electric Lamp – Process of Making Carbon Filaments – System of Electric Lighting – Incandescent Electric Lamp – Process of Making Phonogram-Blanks – Machine for Making Phonogram-Blanks – Machine for Making Phonogram-Blanks – Method of Preparing Phonograph Recording-Surfaces – Phonograph-Recorder – Method of Recording and Reproducing Sounds – Method of Recording and Reproducing Sounds – Phonograph-Recorder – Phonograph-Recorder – Phonograph-Reproducer – Circuit-Controller for Dynamo-Electric Machines – Method of Manufacturing Electric Lamps – Incandescent-Lamp Filament – Magnetic Separator – Phonograph Recorder and Reproducer – Method of Winding Field-Magnets – Phonograph – Incandescent Electric Lamp – Ore-Separator – Phonograph Recorder and Reproducer – Phonograph – Phonogram-Blank – Method of Making Phonogram-Blanks – Method of Making Phonogram-Blanks – System of Electric Lighting – Incandescing Electric Lamp – Electrical-Distribution System – Manufacture of Incandescent Electric Lamps – Telephone 501 to 600 This series of patents mainly focus on the phonograph, telegraphy, telephone, and electrical generation and distribution. – Phonograph (1889) – Phonogram-Blank – Phonograph – Process of Treating Phonogram-Blanks – Automatic Determining Device for Phonographs – Automatic Determining Device for Phonographs – Automatic Determining Device for Phonographs – Automatic Determining Device for Phonographs – Phonogram-Blank – Electric Meter – Electric Meter – Manufacture of Carbon Filaments – Carbonizing-Flask – Manufacture of Incandescent Electric Lamps – Manufacture of Incandescent Electric Lamps – Manufacture of Carbon Filaments – Phonogram-Blank – Phonograph – Phonogram-Blank – Quadruplex Telegraph – Telegraphy – Telegraphy – Telegraphy – Apparatus for Speaking-Telephones – Telephonic Repeater – Telephonic Repeater – Phonograph for Dolls or other Toys – Measurement of Electricity in Distribution Systems – Incandescent Lamp – Cut-Out for Incandescent Electric Lamps – Commutator for Dynamo-Electric Machines – Automatic Determining Device for Phonographs – Phonogram-Blank – Magnetic Separator – Phonograph – Automatic Determining Device for Phonographs