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DK5922C
(en)
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Calling device for automatically operating Telephone Systems.
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DK7239C
(en)
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Central switching device for Telephone Systems.
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DK7240C
(en)
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Device for Group Line Telephone Systems.
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DK7821C
(en)
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Connection cable for Telephone system.
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DK7259C
(en)
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Device by Telephone Systems.
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DK5959C
(en)
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Device for automatic telephone devices.
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DK5850C
(en)
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Adjustable Speaker for Telephone Devices.
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DK6982C
(en)
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Calling device for several telephone sets on a double cable.
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DK7171C
(en)
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Telephone connection device.
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DK7238C
(en)
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Device for Telephone Connections.
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DK5683C
(en)
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Switching device for several call stations located on one line.
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DK8810C
(en)
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Device for Amplification of Telephone Streams.
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CH30654A
(en)
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Telephone system
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CH31509A
(en)
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Telephone system
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DK8494C
(en)
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Setting device for automatic Telephone Systems.
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DK4272C
(en)
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Automatic telephone switching device.
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DK7848C
(en)
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Alarm device for use with telephone sets.
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CH29109A
(en)
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Ringing device for self-connecting telephone systems
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DK7010C
(en)
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Interrupt device for Pair Phones.
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CH23683A
(en)
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Call registration device on telephone systems
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DK6526C
(en)
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Setting device for Telegraph and Telephone Stations.
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DK4829C
(en)
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Devices for Telephone Systems with Common Return.
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DK6110C
(en)
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Tightening device for bucket elevators for threshing plants.
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DK7333C
(en)
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Control device for Engines.
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ES36679A1
(en)
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An Electrical Switching device entitled Electro-igniter-damper.
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