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FR2662563A1
(fr)
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Systeme telephonique a plusieurs terminaux telephoniques sur une seule ligne.
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BE417930A
(GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
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US2062822A
(en)
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Selective signaling system
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BE449804A
(fr)
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Système de télécommunication pour l'etablissement de connescions
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US1112841A
(en)
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Selector apparatus.
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US1214258A
(en)
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Telephone system for toll traffic.
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BE430357A
(GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
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BE425800A
(GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
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US1221879A
(en)
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Semi-automatic telephone system.
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BE355261A
(GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
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US1397034A
(en)
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Telephone-exchange system
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BE410055A
(GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
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BE351277A
(GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
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BE481263A
(GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
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BE432828A
(GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
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FR2620292A1
(fr)
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Dispositif pour recevoir et aiguiller des appels telephoniques
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BE469922A
(GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
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CH96100A
(fr)
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Installation pour bureau central manuel téléphonique.
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BE535414A
(GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
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BE413538A
(GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
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BE417475A
(GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
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BE348945A
(GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
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CH88655A
(fr)
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Installation téléphonique.
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BE435614A
(GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
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BE439476A
(GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
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