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DK4034C
(en)
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Procedure for Regenerating the Wire and Cleaning the Glass Bulb in Electric Incandescent Lamps.
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ES28214A3
(en)
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Improvements in electric incandescent lamps.
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ES25363A1
(en)
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Improvements in electric incandescent lamps.
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ES26802A1
(en)
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Improvements in electric and incandescent lamps.
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ES58161A3
(en)
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Improvements in electric incandescent lamps.
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ES33775A1
(en)
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Improvements in electric incandescent lamps.
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DK28493C
(en)
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Method and apparatus for evacuating electric filament lamps and filament lamp suitable for the procedure and method and apparatus for its manufacture.
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ES28683A1
(en)
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Improvements in electric incandescent lamps with two or more independent filaments.
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DK3726C
(en)
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Filament wires for electric lamps and methods for their manufacture.
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DK20975C
(en)
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Electric lamp with incandescent gases and procedure for its manufacture.
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DK12598C
(en)
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Procedure for annealing kit knots in electric incandescent lamps.
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DK18955C
(en)
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Suspension device for the filament in down-burning gas incandescent lamps.
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ES33325A1
(en)
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Improvements in electric incandescent lamps and switches.
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GB190019794A
(en)
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Means whereby the Light in Incandescent Gas Lamps may be Improved
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ES48993A1
(en)
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Improvements in metallic filament incandescent electric lamps.
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ES21145A1
(en)
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Improvement in electric incandescent lamps.
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ES41014A1
(en)
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Improvements in the supports of the metallic filaments for the incandescent electric lamps.
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ES22597A1
(en)
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Improvement in incandescent electric lamps.
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ES58235A1
(en)
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Improvements in electric gas lamps.
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ES58236A1
(en)
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Improvements in electric gas lamps.
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ES58237A1
(en)
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Improvements in electric gas lamps.
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ES58735A1
(en)
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Improvements in electric gas lamps.
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ES39482A1
(en)
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Improvements in incandescent electric lamps.
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ES55068A3
(en)
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Improvements in electric incandescent lamps.
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ES41043A1
(en)
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Improvements in incandescent electric lamps.
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