Who invented light bulb filament
- Who invented carbon light bulb filament
- Who invented the first light bulb filament
- Who invented the electric light bulb filament
- Who invented the carbon light bulb filament in 1881
- Who invented the tungsten filament light bulb
- Who invented the electric light carbon filament bulb
- Who invented the first carbon filament light bulb
- Who invented the filament within the light bulb
- Who invented the filament for the light bulb that could sustain electricity
- Who invented the filament of livermore light bulb