DK10629C
(en)
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Electrical Telegraphy Device.
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DK11292C
(en)
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Device by Telegraph Devices.
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DK11594C
(en)
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Electrical Switching Device.
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GB190903340A
(en)
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Electrical Printing-telegraph.
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DK10411C
(en)
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Device at Centrumsbor.
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DK10488C
(en)
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Device at Valsemøller.
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DK11233C
(en)
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Device at Sovechaiselonger.
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ES44361A1
(en)
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An electrical appliance.
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DK10947C
(en)
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Device at Røgrørene i Rørkedler.
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DK11557C
(en)
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Electrical Command Device.
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ES42562A1
(en)
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Improvements in telegraph devices.
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FR391743A
(en)
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Telegraph
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GB190827332A
(en)
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An Improved Rifle-sight.
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DK10506C
(en)
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Device for Telephone Senders.
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ES43072A1
(en)
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An electric lock.
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ES44483A2
(en)
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An electric lock.
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DK11416C
(en)
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Device by Tjæreforlag.
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ES40009A1
(en)
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Improvements in electrical telegraphy.
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DK10433C
(en)
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Electric fuse.
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AT36373B
(en)
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De-bunging device.
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DK11567C
(en)
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Device by electric motors.
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DK10907C
(en)
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Device by Generators for Electrical Oscillations.
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ES38891A1
(en)
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Improvements in electrical telegraphy.
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FR386008A
(en)
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Cable telegraphy
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AT53585B
(en)
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Switching device.
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