THE LIGHT BULBEDISON, THOMAS ALVA.A.D. 1879, 10th November. Nº 4576 . . . Electric Lamps.Plate (crudely rehinged with cloth tape). 5 pages. 4to, disbound; edges of text leaves brittle and chipped.<\t>(London, 1880)
First printing of the British patent for Edison's light bulb, which failed to include his vacuum treatment of the filament, allowing the British inventor Sir Joseph William Swan to patent the process first. Edison merged his electric lighting company with Swan's in England to avoid potential disputes.<
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