1893 - Thomas Edison received two U.S. patents. The first was for a "Cut Out for Incandescent Electric Lamps" and another for a "Stop Device" (No. 491,992-3). Also No. 492,150 for "Process of Coating Conductors for Incandescent Lamps."
... the next five years, design work continued, aided by data from the British Aerospace EAP prototype which had first flown in 1986, and culminating in the first flight ...