DK9371C
(en)
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Procedure for the manufacture of metal filament for electric filament lamps.
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DK9282C
(en)
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Procedure for the manufacture of filament light for electric filament lamps.
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DK9048C
(en)
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Procedure for the manufacture of filament lamps for electric filament lamps.
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DK9336C
(en)
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Metal filament for electric incandescent lamps.
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DK8957C
(en)
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Procedure for the manufacture of filament light for electric filament lamps.
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DK10550C
(en)
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Procedure for the manufacture of electric filament.
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DK12551C
(en)
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Procedure for the manufacture of metal wire hangers for electric incandescent lamps.
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DK10837C
(en)
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Procedure for the manufacture of tungsten wire for electric incandescent lamps.
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DK11231C
(en)
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Procedure for the manufacture of filament light for electric filament lamps.
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DK10205C
(en)
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Procedure for Manufacturing Lighting Gas.
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DK10082C
(en)
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Embers for electric lamps and Procedures for the manufacture of the same.
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DK9026C
(en)
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Procedure for the production of mercury vapor lamps.
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DK9583C
(en)
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Procedure for the manufacture of electric filaments of tungsten or molybdenum.
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DK9838C
(en)
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Procedure for the manufacture of electric filaments of tungsten or molybdenum.
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DK12716C
(en)
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Procedure for the manufacture of lighters.
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CH41060A
(en)
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Metal filament light bulb
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CH44179A
(en)
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Metal filament light bulb
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DK12804C
(en)
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Procedure for Renewal of blackened cult wire lamps.
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ES40458A1
(en)
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An improved process for the manufacture of filaments for electric incandescent lamps.
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DK9406C
(en)
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Method for Manufacturing Very Thin Metal Wires for Electric Bulbs.
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DK10733C
(en)
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Procedure for Making Wires for Incandescent Lamps.
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DK10246C
(en)
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Electric Arc Lamp.
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ES40459A1
(en)
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An improved process for the manufacture of filaments for incandescent lamps.
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DK10089C
(en)
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Three-phase arc lamp.
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ES40958A1
(en)
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A procedure for the manufacture of metallic filaments for electric incandescent lamps.
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