Incandescent light bulb street in the world to be lit by an incandescent lightbulb was Mosley Street, Newcastle upon Tyne, United Kingdom. It was lit by Joseph Swan's incandescent lamp on 3 February 1879. Thomas Edison began serious research into developing a practical incandescent lamp in 1878. Edison filed his first patent application for "Improvement In Electric Lights" on 14 October 1878. After many experiments, first with carbon in the early 1880s and then with platinum and other metals, in the end Edison returned to a carbon filament. The first successful test was on 22 October 1879, and lasted 13.5 hours. Edison continued
Electric pen Electric Pen also includes a very rare battery box. The owner sells the Pen to the Pickers for $12,000, which they expect to resell at a higher price. Electric pen Thomas Edison's electric pen, part of a complete outfit for duplicating handwritten documents and drawings, was the first relatively safe electric-motor-driven office appliance produced and sold in the United States. Edison recognized the possible demand for a high speed copying device after observing the incredible amount of document duplication required of merchants, lawyers, insurance companies, and those of similar occupations. To satisfy this demand, Edison invented the electric pen, which