Who invented the very first incandescent light bulb

- Who invented the first incandescent light bulb
- Who invented the first practical incandescent light bulb
- Who invented the first incandescent electric light bulb
- Who invented the first practiced incandescent light bulb
- Who invented the first successful incandescent light bulb
- Who invented the first efficient incandescent light bulb that was later used in projectors
- Who invented the first long lasting incandescent light bulb
- Who invented the first commercially viable incandescent light bulb