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DK14073C
(en)
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Insert insulator for Telegraph and Telephone cables.
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DK14812C
(en)
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Insulator for Telegraph, Telephone and similar Wiring.
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CA134430A
(en)
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Insulator for telegraph and telephone wires
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DK14237C
(en)
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Connection box for electrical wires and cables.
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DK15069C
(en)
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Connection terminal for electrical wires.
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DK14824C
(en)
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Telephone and Telegraph Feedback Device.
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DK11883C
(en)
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Devices for insulators for telephone, telegraph and other electrical wiring.
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CA138307A
(en)
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Telegraph system
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CH57407A
(en)
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Telephone switchboard
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CA138267A
(en)
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Selective telegraph system
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CA134170A
(en)
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Telegraph and telephone
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FR435781A
(en)
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Adjustable self-induction cable for fast telegraphy and telephony
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CA134391A
(en)
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Telephone system
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CA148625A
(en)
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Telephone system
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FR481601A
(en)
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Telegraph and telephone isolator
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ES48462A1
(en)
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An improved system of insulators for telegraph, telephone wires and their analogues.
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ES51959A1
(en)
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An improved system of hermetic and waterproof switchboards and apparatus for telephone lines.
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AT81614B
(en)
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Telephone system.
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DK33751C
(en)
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Line amplifier device for Telephone cables.
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DK19507C
(en)
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Distribution system for Telephone cables.
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ES50164A1
(en)
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Apparatus entitled Electrical resistance Phoenix.
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FR439134A
(en)
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Cables or electrical conductors
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CH51010A
(en)
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Entry isolator for telegraph and telephone lines
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CA146957A
(en)
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Party telephone line
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DK18331C
(en)
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Insulator arm for Telegraph poles.
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