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ES320016A2
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An electric flammable lamp. (Machine-translation by Google Translate, not legally binding)
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GB1031445A
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Improvements in or relating to electric filament lamps
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ES283631A2
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An electric lamp of incandescence (Machine-translation by Google Translate, not legally binding)
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ES269067A1
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Regulation procedure for tubular lamps of indescence with iodine steam (Machine-translation by Google Translate, not legally binding)
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US2951734A
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Method of manufacturing electric filament lamps, more particularly for motor-car lighting
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GB853843A
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Improvements in or relating to electric incandescent lamps
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GB747039A
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Improvements in or relating to electric incandescent lamps, more particularly for use in motor vehicle lights
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