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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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GB190307608A
(en)
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Improvements in Continuous Current Arc Lamps.
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|
CH23227A
(en)
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Advanced carbon electric conductor
|
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CH25682A
(en)
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Electric arc lamp
|
|
GB189419668A
(en)
|
|
Improvements in Carbons or Electrodes used in Arc Lamps for Electric Lighting.
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|
CH25344A
(en)
|
|
Device on electric arc lamps with electrodes pointing downwards to regulate the downward movement of the same
|
|
CH10516A
(en)
|
|
Electric arc lamp
|
|
CH16327A
(en)
|
|
Electric arc lamp
|
|
CH30934A
(en)
|
|
Electric arc lamp
|
|
GB190118795A
(en)
|
|
Improvements in Electric Lighting by Low Frequency Currents.
|
|
CH33507A
(en)
|
|
Electric vapor arc lamp
|
|
GB189627304A
(en)
|
|
Improvements relating to Electric Arc Lamps.
|
|
GB190120651A
(en)
|
|
Improvements relating to Electric Arc Lamps
|
|
GB189619757A
(en)
|
|
Improvements relating to the Connection of Constant Current Dynamos to Electric Lamp Circuits.
|
|
GB190404062A
(en)
|
|
A New Type of Electric Arc-lamp
|
|
DK5710C
(en)
|
|
Electric Arc lamp with two arcs between three electrodes.
|
|
CH13366A
(en)
|
|
Novel carbon rod for electric arc lamps
|
|
CA83533A
(en)
|
|
Electric arc lamp
|
|
CA92151A
(en)
|
|
Electric arc lamp
|
|
CA89381A
(en)
|
|
Electric arc lamp
|
|
GB190119225A
(en)
|
|
Improvements in Incandescent Electric Lamps
|
|
ES28548A3
(en)
|
|
An electric incandescent lighting procedure.
|
|
DK3638C
(en)
|
|
Spring base for electric incandescent lamps.
|
|
CH31213A
(en)
|
|
Electric flashlight with cigar lighter
|
|
GB189609667A
(en)
|
|
Electric Arc Lamps.
|