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- Google Patents
DE2125035A1 - Elektronische Vorrichtung zur Unterbrechung eines Stroms, insbesondere eines Wähltonstroms
- Google Patents
Elektronische Vorrichtung zur Unterbrechung eines Stroms, insbesondere eines Wähltonstroms
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.)
Nokia Inc
Original Assignee
Nokia Inc
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Filing date
Publication date
Application filed by Nokia IncfiledCriticalNokia Inc
Publication of DE2125035A1publicationCriticalpatent/DE2125035A1/de
Wechsel- oder Gegensprechanlage mit mehreren untereinander gleichberechtigten,ueber zweiadrige Sprechleitungen an eine gemeinsame Zentrale angeschlossenen Sprechstellen