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BE391837A
(GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
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US2838611A
(en)
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Circuit arrangement for subscriber's station lines
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BE345811A
(GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
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BE361645A
(GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
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CH389034A
(fr)
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Dispositif de concentration de lignes téléphoniques
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BE469508A
(GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
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BE460754A
(GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
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BE384554A
(GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
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BE374766A
(GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
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BE377986A
(GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
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BE353818A
(GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
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CH126309A
(fr)
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Installation de distribution d'appels pour centrales téléphoniques.
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BE347524A
(GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
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BE428776A
(GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
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BE428323A
(GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
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BE534858A
(GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
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CH88655A
(fr)
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Installation téléphonique.
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BE348945A
(GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
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CH120110A
(fr)
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Installation téléphonique automatique.
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BE481072A
(GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
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CH135611A
(fr)
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Installation téléphonique.
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BE436878A
(GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
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BE409407A
(GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
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BE370229A
(GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
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CH95589A
(fr)
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Installation téléphonique d'intercommunication entre un bureau central automatique et un bureau privé annexe.
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