The old Microsoft Encarta encyclopedia had different facts for different countries. In the US edition, Thomas Edison invented the light bulb, while the

The old Microsoft Encarta encyclopedia had different facts for different countries. In the US edition, Thomas Edison invented the light bulb, while the British version said it was Sir Joseph Swan. If you search for "lightbulb inventor" on Google [1] it currently shows three "lightbulb inventors": Thomas Edison, Hiram Maxim, and Joseph Swan. [1] https://www.google.com/search?q=lightbulb%20inventor https://www.google.com/search?q=lightbulb%20inventor