CH395200A
(fr)
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Installation de sélection d'un central de télécommunication automatique
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BE446398A
(GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
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US1763893A
(en)
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Telephone system
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BE522048A
(GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
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BE449804A
(fr)
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Système de télécommunication pour l'etablissement de connescions
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CH297625A
(fr)
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Installation de commutation automatique.
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US1946228A
(en)
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Telephone system
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BE474794A
(GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
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US1174434A
(en)
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Telephone pay-station.
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BE464914A
(GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
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CH106672A
(fr)
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Installation téléphonique pour bureau central à commutateurs automatiques.
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BE447213A
(GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
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US1818026A
(en)
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Telephone system
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BE480689A
(GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
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BE482060A
(GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
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CH292957A
(fr)
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Installation de commutation automatique.
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US1147390A
(en)
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Switches and circuits for automatic telephone-exchanges.
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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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BE474612A
(GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
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BE386134A
(GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
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BE351277A
(GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
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BE369046A
(GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
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BE354594A
(GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
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BE475418A
(GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
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