Did Thomas Edison really invent the light bulb?

The history of the light bulb reads like a story straight out of a tabloid magazine. Contrary to what schools have taught for years, the American icon, Thomas Edison, neither invented the light bulb, nor held the first patent to the modern design of the light bulb.

Apparently, the we gave the esteemed Mr. Edison credit for the invention solely because he owned a power company, later known as General Electric, and a light bulb is just a bulb without a source of electricity to light it. In reality, light bulbs used as electric lights existed 50 years prior to Thomas Edison's 1879 patent date in the U.S.

Additionally, Joseph Swan, a British inventor, obtained the first patent for the same light bulb in Britain one year prior to Edison's patent date. Swan even publicly unveiled his carbon filament light bulb in New Castle, England a minimum of 10 years before Edison shocked the world with the announcement that he invented the first light bulb. Edison's light bulb, in fact, was a carbon copy of Swan's light bulb.

How do two inventors, from two different countries the invent exact same thing? Very easily, if one follows in the others footsteps. Swan's initial findings from tinkering with carbon filament electric lighting, and his preliminary designs, appeared in an article published by Scientific American. Without a doubt, Edison had access to, and eagerly read this article. Giving Mr. Edison the benefit of the doubt, and stopping short of calling him a plagiarist, we can say that he invented the light bulb by making vast improvements to Swan's published, yet unperfected designs.

Swan, however, felt quite differently, as he watched Edison line his pockets with money made from his invention, and took Edison to Court for patent infringement. The British Courts stood by their patent award for the light bulb to Swan, and Edison lost the suit. The British Courts forced Edison, as part of the settlement, to name Swan a partner in his British electric company. Eventually, Edison managed to acquire all of Swans' interest in the newly renamed Edison and Swan United Electric Company.

Edison fared no better back home in the U.S., where the U.S. Patent Office already ruled, on October 8, 1883, that Edison's patents were invalid, because he based them upon the earlier art of a gentleman named William Sawyer. To make matters worse, Swan sold his U.S. patent rights, in June 1882, to Brush Electric Company. This chain of events stripped Edison of all patent rights to the light bulb, and left him with no hope of purchasing any.

Edison dusted himself off, and went into business setting up a direct current (DC) system of power distribution in New York City, and selling the light bulbs that used this e