The age of 21 years and had copyrighted the first invention of his later in the year 1878 Edison bulb tube made the world's first success. Edison had copyrighted inventions over his 1200 type. His work, such as a light bulbGramophone recorder, etc., Edison worked diligently the night he slept only 4-5 hours. Only at the end of the life of his health. Worn out back and forth and died in AD 1931.