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DK5683C
(en)
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Switching device for several call stations located on one line.
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DK4534C
(en)
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Switching device for several intermediate stations located on one line.
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DK7239C
(en)
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Central switching device for Telephone Systems.
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DK5922C
(en)
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Calling device for automatically operating Telephone Systems.
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DK4272C
(en)
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Automatic telephone switching device.
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ES36679A1
(en)
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An Electrical Switching device entitled Electro-igniter-damper.
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ES32684A1
(en)
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A telephone switchboard.
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DK5959C
(en)
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Device for automatic telephone devices.
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CH30593A
(en)
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Electrical switching device on rollers for typewriters etc.
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ES31147A1
(en)
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A current limiting device.
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ES32122A1
(en)
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A current limiting device.
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DK5978C
(en)
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Device for opening cans.
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DK4602C
(en)
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Wire connection at telephone exchange stations.
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DK8032C
(en)
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Device for switching devices.
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ES32993A1
(en)
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An electrical switch, Mitjans-Prats system.
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AT25973B
(en)
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Switching device for AC systems.
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AT25443B
(en)
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Automatic telephone switch.
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DK6982C
(en)
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Calling device for several telephone sets on a double cable.
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DK9322C
(en)
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Switching device.
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DK5221C
(en)
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Switching device for several telephones inserted in a common line in a telephone system.
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DK7240C
(en)
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Device for Group Line Telephone Systems.
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DK9236C
(en)
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Service rinsing device.
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ES30227A2
(en)
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An announcing device with movable advertisements.
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ES31730A3
(en)
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A new root-cutting device.
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DK7171C
(en)
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Telephone connection device.
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