BE414835A
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WO1992014335A1
(fr )
1992-08-20
Telecopieur a communications diverses
US2147820A
(en )
1939-02-21
Circuit arrangement for recording telephonic communications
BE894410A
(fr )
1983-01-03
Repondeur phonique automatique
BE427296A
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CH623695A5
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1981-06-15
BE711507A
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1968-07-01
BE380181A
(GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html )
SU306A1
(ru )
1924-09-15
Телефонно-осведомительный аппарат
EP0083281B1
(fr )
1986-11-12
Procédé et dispositif d'alimentation d'une régie d'abonné
BE341574A
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BE501618A
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BE370898A
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BE504197A
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BE743633A
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1970-05-28
BE473923A
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BE424605A
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BE467368A
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BE347955A
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BE428120A
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BE402010A
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BE363079A
(GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html )
CH327134A
(fr )
1958-01-15
Dispositif permettant d'effectuer un contrôle au moyen d'un poste téléphonique d'abonné
BE388422A
(GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html )
BE421347A
(GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html )