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DK3695C
(en)
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Telegraphic Transmitter for automatic transmission of certain Morse code.
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DK3681C
(en)
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Transmitter for Morse code and Typographical Telegraphy.
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ES29021A1
(en)
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A system of telegraph and telephone transmissions by triple derivation.
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DK4097C
(en)
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Automatic Receiver for Morse code both by Single and Multiplex Telegraphy at intervals and at the same time Telegraphing in opposite directions.
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ES28388A1
(en)
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A transmission system for telegraph and telephone signals.
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FR329539A
(en)
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Telegraph transmitter
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DK6225C
(en)
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Receiver device for submarine sound transmission.
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DK3629C
(en)
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Telegraph.
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ES36335A1
(en)
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A system of multiple telegraph transmissions.
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FR339988A
(en)
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Telegraph transmitter
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CA85478A
(en)
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Telegraph transmitter
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FR370115A
(en)
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Receiver for telegraphic transmissions
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DK2676C
(en)
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Type telegraph for short-distance telegraphy.
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DK3473C
(en)
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Devices by Telegraph Transmitters.
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CA90828A
(en)
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Telegraph receiver
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CA88461A
(en)
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Telegraph transmitter
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CA90409A
(en)
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Telegraph transmitter
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ES20530A1
(en)
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An automatic transmitter.
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FR346431A
(en)
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Telegraph transmitter
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CH32380A
(en)
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Telegraph transmitter
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DK3670C
(en)
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Procedure for Making Paper for Secret Messages.
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CA90389A
(en)
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Telegraphic transmitter
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CA86521A
(en)
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Printing telegraph receiver
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FI1453A
(en)
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Automatic transmission
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DK4565C
(en)
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Devices at Perforators for the Paper Strips of Automatic Telegraph Transmitters.
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