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AT315300B
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Circuit arrangement for protection against deep discharge of an accumulator in an emergency power supply device that can be charged by a charger
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DE1167404B
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Cover for accumulators or galvanic elements
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DE957054C
|
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Charger with magnetic switch for accumulator miner's lamps
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DE949722C
|
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Pit team light for signaling purposes
|
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GB536345A
|
|
Improvements in or relating to firedamp-proof lamps
|
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GB531664A
|
|
Improvements in or relating to electric plug and socket devices
|
|
GB530750A
|
|
Improvements in or relating to electric mining lamps
|
|
GB530118A
|
|
Improvements in or relating to electric generators for use in mines
|
|
GB528627A
|
|
Improvements in or relating to electrical miners' lamps having two light sources
|
|
GB511125A
|
|
Improvements in or relating to means for fastening the lids of accumulator casings
|
|
GB523096A
|
|
Improvements in or relating to electric mine lamps
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