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DK10714C
(en)
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Device for Wireless Telephony and Telegraphy.
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DK21019C
(en)
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Device for Receiving Devices for Wireless Telegraphy and Telephony.
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DK14812C
(en)
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Insulator for Telegraph, Telephone and similar Wiring.
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DK10167C
(en)
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Device for Wireless Telephony and Telegraphy.
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DK13694C
(en)
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Call Counter and Phone Recorder.
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DK14073C
(en)
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Insert insulator for Telegraph and Telephone cables.
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DK11508C
(en)
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Disinfection device for Telephone Devices.
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DK10838C
(en)
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Device for Senders for Wireless Telephony and Telegraphy.
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DK10671C
(en)
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Device for Senders for Wireless Telephony and Telegraphy.
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ES48531A1
(en)
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Improvements in telephone devices.
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DK11615C
(en)
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Wireless Telegraphy Device.
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DK19420C
(en)
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Ringing device for church bells and the like.
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DK33751C
(en)
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Line amplifier device for Telephone cables.
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DK32353C
(en)
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Cordless Telegraph or Directional Telephony Apparatus.
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FR481601A
(en)
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Telegraph and telephone isolator
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ES39928A3
(en)
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A telephone and telegraph device.
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DK10739C
(en)
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Telephone Dialing Device.
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FR400082A
(en)
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Secret telephone transmitter
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DK6526C
(en)
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Setting device for Telegraph and Telephone Stations.
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CA106751A
(en)
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Portable telephone and telegraph
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DK19316C
(en)
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Telegraph device.
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ES42562A1
(en)
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Improvements in telegraph devices.
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DK11275C
(en)
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Receiving device for wireless Telegraphy.
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DK17167C
(en)
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Transformer for Telephone Currents and Similar Currents.
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DK26033C
(en)
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Procedure and Device for Connecting Electrical and Other Wires.
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