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DK3150C
(en)
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Lamp base for electric lamps with light body of conductors of second order.
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DK3116C
(en)
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Procedure for Regulating the Power Supply to Light Bodies by Second Order Conductors.
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DK4379C
(en)
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Lighting system with Use of Incandescent lamps for low Voltage.
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ES24265A1
(en)
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Improvements to electric lighting devices.
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DK4269C
(en)
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Regulating current switch for electric incandescent lamps with two carbon wires.
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CH23406A
(en)
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Joint for arms of electric lighting fixtures
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FI1300A
(en)
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Regeneration of the electrical energy of the three-way lamp
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FR1543228A
(en)
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Solar tracker
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CH15855A
(en)
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Advanced electric lamp
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CH22379A
(en)
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New to Nernst lamps with automatic heating circuit breaker in the lamp base
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FR323126A
(en)
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Single phase to direct current AC transformer
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FR1875E
(en)
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Single phase to direct current AC transformer
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FR1874E
(en)
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Single phase to direct current AC transformer
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DK3650C
(en)
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Power supply for electric Lanes with mechanically inserted Subconductors.
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DK4350C
(en)
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Electric Arc Lamp for Light Therapy.
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CH33034A
(en)
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AC arc lamp with main current regulating winding
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ES26749A1
(en)
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Improvements in electric arc lamps for the production of chemical rays.
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CH22222A
(en)
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Acetylene lantern
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CH21069A
(en)
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Electric arc lamp
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CH21733A
(en)
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Electric arc lamp
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CH21345A
(en)
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Electric lamp with variable light intensity
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ES24592A1
(en)
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Improvements in electrical current devices, which are used in electrical lighting installations.
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CH22552A
(en)
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A new electric lamp
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CH13933A
(en)
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Advanced iucandescent electric lamp
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CH24493A
(en)
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Electric light bulb
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