FR627280A - Disposition de connexion pour la correction d'impulsions de courant dans les installations téléphoniques à fonctionnement par sélecteurs
- Google Patents
Disposition de connexion pour la correction d'impulsions de courant dans les installations téléphoniques à fonctionnement par sélecteurs
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.)
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Siemens and Halske AG
Siemens AG
Original Assignee
Siemens and Halske AG
Siemens AG
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Application filed by Siemens and Halske AG, Siemens AGfiledCriticalSiemens and Halske AG
Application grantedgrantedCritical
Publication of FR627280ApublicationCriticalpatent/FR627280A/fr
H04Q1/00—Details of selecting apparatus or arrangements
H04Q1/18—Electrical details
H04Q1/30—Signalling arrangements; Manipulation of signalling currents
H04Q1/44—Signalling arrangements; Manipulation of signalling currents using alternate current
H04Q1/442—Signalling arrangements; Manipulation of signalling currents using alternate current with out-of-voice band signalling frequencies
H04Q1/4423—Signalling arrangements; Manipulation of signalling currents using alternate current with out-of-voice band signalling frequencies using one signalling frequency
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Engineering & Computer Science
(AREA)
Computer Networks & Wireless Communication
(AREA)
FR627280D1926-07-121927-01-08Disposition de connexion pour la correction d'impulsions de courant dans les installations téléphoniques à fonctionnement par sélecteurs
ExpiredFR627280A
(fr)