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ance arc lamp arranged in multiple atmosphere attenuated after carbonization bonization bulb made wholly burners previously carbon burner carbon conductor carbon filament carbon of high carbon rod carbon wire circuit clamping closed chamber coiled or arranged conductors of high defendant electric conductors electric current electric lamp electric light electricians English Patents filamentary carbon French and English fusion giving light glass bulb globe hermetically sealed high resistance hundred ohms incandescent lamp inch in diameter invention described invention further consists knew Lane-Fox and Edison leading wires light by incandescence low resistance metallic wires multiple arc oxygen patent granted perfect vacuum plastic lamp-black platina platinum burner platinum wires practical subdivision principal radiating prior art resistance and small rod or pencil rods of carbon Sawyer second claim secured to metallic seven one-thousandths sistance small radiating surface specific heat spiral thread of carbon tion total resistance translating devices vacuum bulb wholly of glass