One of eighty-six early incandescent lamps. Carbon
One of eighty-six early incandescent lamps. Carbon filamentlamp, single looped filament, no supports. Short lead in wires, filted through blue glass pieces, attached to bulb. Clear round bulb, without neck. Top pip.Single contact bayonet cap, with shoulder attached & insulated with plaster. Manufacturer unknown. No markings.
- Object Number:
- carbon filament lamp
- Institution of Electronical Engineering
- Permanent collection
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