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DK6962C
(en)
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Pushbutton for combined Signal and Telephone cables.
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FR340435A
(en)
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Telephone transmitter
|
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CH33516A
(en)
|
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Self-collecting telephone system
|
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DK6508C
(en)
|
|
Pile for Telegraph and Telephone Cables.
|
|
DK7171C
(en)
|
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Telephone connection device.
|
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FR347179A
(en)
|
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Telephone receiver
|
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FR348401A
(en)
|
|
Telephone receiver
|
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CH31257A
(en)
|
|
Telephone receiver
|
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DK7633C
(en)
|
|
Combined Microphone and Telephone.
|
|
DK6443C
(en)
|
|
Telephone Memorandum.
|
|
CH39532A
(en)
|
|
Telephone system
|
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FR350203A
(en)
|
|
Phone enhancements
|
|
DK7399C
(en)
|
|
Air-insulated Telephone and Telegraph Cable.
|
|
FR345826A
(en)
|
|
Telephone repeater
|
|
AT24623B
(en)
|
|
Telephone relay.
|
|
CH30654A
(en)
|
|
Telephone system
|
|
CH31509A
(en)
|
|
Telephone system
|
|
ES33404A1
(en)
|
|
An announcement procedure.
|
|
FR343290A
(en)
|
|
Crossover refinements
|
|
DK8810C
(en)
|
|
Device for Amplification of Telephone Streams.
|
|
FR342950A
(en)
|
|
Telephone transmitter
|
|
DK5850C
(en)
|
|
Adjustable Speaker for Telephone Devices.
|
|
FR345554A
(en)
|
|
Telephone systems
|
|
ES34179A1
(en)
|
|
An electrical annunciator.
|
|
ES34399A1
(en)
|
|
Improvements in telephone repeaters.
|