CH502741A -
Circuit arrangement for telecommunication switching systems, in particular telephone dialing systems, with indirectly adjustable coupling devices
- Google Patents
Circuit arrangement for telecommunication switching systems, in particular telephone dialing systems, with indirectly adjustable coupling devices
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Publication number
CH502741A
CH502741ACH1775269ACH1775269ACH502741ACH 502741 ACH502741 ACH 502741ACH 1775269 ACH1775269 ACH 1775269ACH 1775269 ACH1775269 ACH 1775269ACH 502741 ACH502741 ACH 502741A
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Application filed by Siemens AgfiledCriticalSiemens Ag
Publication of CH502741ApublicationCriticalpatent/CH502741A/en
Circuit arrangement for telecommunications switching systems with unattended sub-offices, in particular for apron equipment in telephone dialing systems