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DK4554C
(en)
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Device for telephone sets with the same cable for several subscribers.
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DK7171C
(en)
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Telephone connection device.
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DK6982C
(en)
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Calling device for several telephone sets on a double cable.
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DK4852C
(en)
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Device for Telephone System with Central Microphone Battery.
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DK4992C
(en)
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Device for Phones with Call Counter.
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DK7240C
(en)
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Device for Group Line Telephone Systems.
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CH31675A
(en)
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Telephone system based on the so-called line dialer system
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DK9359C
(en)
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Device at Telephone exchanges.
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DK7848C
(en)
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Alarm device for use with telephone sets.
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DK4762C
(en)
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Device at Cyklelaase.
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DK5230C
(en)
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Device at Laase.
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DK5296C
(en)
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Device at Møllesten.
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DK7259C
(en)
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Device by Telephone Systems.
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DK6508C
(en)
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Pile for Telegraph and Telephone Cables.
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DK4890C
(en)
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Electrical Cable.
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DK4829C
(en)
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Devices for Telephone Systems with Common Return.
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DK5959C
(en)
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Device for automatic telephone devices.
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DK7399C
(en)
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Air-insulated Telephone and Telegraph Cable.
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DK7060C
(en)
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Device for fastening wire cords on insulators.
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CH26991A
(en)
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Telephone system
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DK8169C
(en)
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Device for Voice Devices.
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DK5850C
(en)
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Adjustable Speaker for Telephone Devices.
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DK16142C
(en)
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Device for devices for marking signals at telephone exchanges, telephone switches and the like.
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DK8580C
(en)
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Device at Telephone exchanges with separate Plug operation.
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DK4655C
(en)
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Devices at Stiklaase.
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