FR697394A - Disposition de couplage pour installation d'indications à distance, notamment pour installations téléphoniques avec lignes de société
- Google Patents
Disposition de couplage pour installation d'indications à distance, notamment pour installations téléphoniques avec lignes de société
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens and Halske AG
Siemens Corp
Original Assignee
Siemens and Halske AG
Siemens Corp
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Application filed by Siemens and Halske AG, Siemens CorpfiledCriticalSiemens and Halske AG
Application grantedgrantedCritical
Publication of FR697394ApublicationCriticalpatent/FR697394A/fr
H04Q3/58—Arrangements providing connection between main exchange and sub-exchange or satellite
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Physics & Mathematics
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Astronomy & Astrophysics
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General Physics & Mathematics
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Engineering & Computer Science
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Computer Networks & Wireless Communication
(AREA)
Interface Circuits In Exchanges
(AREA)
FR697394D1929-06-121930-05-27Disposition de couplage pour installation d'indications à distance, notamment pour installations téléphoniques avec lignes de société
ExpiredFR697394A
(fr)
Disposition de connexion pour lignes de communication dans les installations de transmission à distance, notamment dans les installations téléphoniques