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DK6508C
(en)
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Pile for Telegraph and Telephone Cables.
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DK6526C
(en)
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Setting device for Telegraph and Telephone Stations.
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DK6962C
(en)
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Pushbutton for combined Signal and Telephone cables.
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DK7399C
(en)
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Air-insulated Telephone and Telegraph Cable.
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DK7171C
(en)
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Telephone connection device.
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FR340435A
(en)
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Telephone transmitter
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DK6982C
(en)
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Calling device for several telephone sets on a double cable.
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AT25883B
(en)
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Quadruplex telegraph.
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DK6443C
(en)
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Telephone Memorandum.
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DK5850C
(en)
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Adjustable Speaker for Telephone Devices.
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ES34399A1
(en)
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Improvements in telephone repeaters.
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DK10739C
(en)
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Telephone Dialing Device.
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DK6561C
(en)
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Automatic electric connectors for telephones and the like.
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FR377966A
(en)
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Telephone transmitter
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FR339988A
(en)
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Telegraph transmitter
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CH33516A
(en)
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Self-collecting telephone system
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DK14824C
(en)
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Telephone and Telegraph Feedback Device.
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AT24623B
(en)
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Telephone relay.
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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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CH39532A
(en)
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Telephone system
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DK5954C
(en)
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Apparatus for Telegraphy and Telephony Using Non-Insulated Submarine Cables.
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FR342950A
(en)
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Telephone transmitter
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FR345826A
(en)
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Telephone repeater
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DK7821C
(en)
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Connection cable for Telephone system.
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DK8810C
(en)
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Device for Amplification of Telephone Streams.
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