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DK18827C
(en)
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Circuit Device for Telephone Systems.
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DK18997C
(en)
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Telephone system.
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DK22593C
(en)
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Telephone system.
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DK18956C
(en)
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Device for Microphones.
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AT82883B
(en)
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Automatic telephone system.
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DK18356C
(en)
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Power surge transmitter for automatic telephone systems.
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AT75560B
(en)
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Telephone switching system.
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DK19316C
(en)
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Telegraph device.
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DK18316C
(en)
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Telephone system connection device with Selectors.
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DK19191C
(en)
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Device for Performing Kinematograms.
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DK19618C
(en)
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Turning device for Jolledavider.
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DK19578C
(en)
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Connecting device for intermediate city Telephone traffic.
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DK17025C
(en)
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Connecting device for semi-automatic Telephone systems.
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DK17874C
(en)
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Connecting device for semi-automatic Telephone systems.
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FR479712A
(en)
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Automatic telephone systems
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AT80136B
(en)
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Circuit arrangement for telephone systems. Circuit arrangement for telephone systems.
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DK19610C
(en)
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Device for Amplification of Electrical Variations.
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DK18370C
(en)
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Device for pressure telegraph systems.
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DK18391C
(en)
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Contact for Alarm devices.
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DK18556C
(en)
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Remender Punching Device.
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ES58374A1
(en)
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Telephone.
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DK18626C
(en)
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Telephone exchange system.
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DK36142C
(en)
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Transmitter device for Signal Systems.
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DK20075C
(en)
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Connecting device for Part subscribers in Telephone systems.
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DK17180C
(en)
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Device for House Telephone Systems.
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