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US2400124A
(en)
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Telegraph exchange system
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US1181559A
(en)
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Intercommunicating selective lockout telephone system.
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GB558781A
(en)
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Improvements in or relating to automatic telegraph exchange systems
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GB527336A
(en)
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Printing telegraph system
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BE384554A
(cg-RX-API-DMAC7.html)
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US1209303A
(en)
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Multiple-dial calling device.
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BE344464A
(cg-RX-API-DMAC7.html)
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BE412135A
(cg-RX-API-DMAC7.html)
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BE426051A
(cg-RX-API-DMAC7.html)
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BE427507A
(cg-RX-API-DMAC7.html)
|
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BE340840A
(cg-RX-API-DMAC7.html)
|
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BE467275A
(cg-RX-API-DMAC7.html)
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BE363268A
(cg-RX-API-DMAC7.html)
|
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BE371832A
(cg-RX-API-DMAC7.html)
|
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BE480310A
(cg-RX-API-DMAC7.html)
|
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BE353818A
(cg-RX-API-DMAC7.html)
|
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BE528427A
(cg-RX-API-DMAC7.html)
|
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BE349461A
(cg-RX-API-DMAC7.html)
|
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BE429601A
(cg-RX-API-DMAC7.html)
|
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BE411173A
(cg-RX-API-DMAC7.html)
|
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BE731310A
(cg-RX-API-DMAC7.html)
|
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BE531956A
(cg-RX-API-DMAC7.html)
|
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BE408188A
(cg-RX-API-DMAC7.html)
|
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CH100326A
(fr)
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Installation télégraphique à appareils imprimeurs.
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CH335414A
(fr)
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Installation télégraphique
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